occur (Also occurring, occurred, occurs) : Related Words Words similar in meaning to occur

common, blaze, come to pass, execute, tie, crack, upset, appalling, pretend, biopiracy, popping, biochemistry, clump, bile acid, feast, biannual, foretell, receding, outrage, beforemath, throw, be, tap, antenatal, distract, amino acid, trample, alkaloid, sync, albumin, encroach, aerobic, repeating, actual, chorus, smolder, bell, chirp, kick, counter, press, bust, whirl, duplicate, mate, streak, respite, ticking, rattling, whistle, bending, pop, miscarry, twitter, shot, buzz, forestall, clip, designate, misfire, doom, fulfill, mesh, triumph, lessening, beat, associate, dripping, flashing, insisting, replay, drum, adjoin, restate, whistling, clumping, beep, sparkling, sparkle, reprieve, drip, trench, howling, fulfil, thud, whack, reiterate, disquiet, flop, unhinge, rap, murmur, tapping, throbbing, perturb, wring, reprise, trampling, sigh, exemplify, knocking, glimmer, pat, meshing, interlocking, decease, whir, smudge, purr, condensing, shimmer, flick, licking, gurgle, skirl, reprize, reduplicate, locomote, irrupt, ingeminate, forebode, cooccur, chirrup, cark, bleep, entrench, murmuring, twinkle, jangle, thump, twang, peal, gleam, patter, smoulder, retell, glint, heave, thumping, gargle, jingle, gleaming, egress, glitter, mutter, founder, recapitulate, swish, toot, thrum, wrench, ping, quaver, instantiate, strum, muttering, whirring, pealing, quack, whiz, clink, bong, ting, birr, chink, prognosticate, plunk, clunk, clop, ail, clunking, whirr, ding, vroom, tootle, tinkle, clopping, destine, affect, cause to sleep, cause, change taste, change surface, change state, change shape, change posture, change over, change magnitude, change intensity, change integrity, change form, change by reversal, originate, causing, suffer, come to mind, come to light, come to hand, come round, come on, come in, come forth, come down, come away, come along, come across, follow up, follow through, follow out, follow, be born, be adrift, continue, spread over, spread, fall through, fall for, fall flat, flow, form, rest on, even out, even, surface, make grow, grow, worsen, means, produce, phase, take it on the chin, step on it, snuff it, varying, slow up, slow down, slow, run across, go across, emerge, reduce, evolve, usher in, take in, roll in, colour in, color in, cash in one's chips, turn up, turn on, turn back, turn around, spring up, spring to mind, spring, live, move up, move on, move back, move around, take up, take the air, take pride, take on, take a hop, take a firm stand, take, shape, soil, migrate, rise, generate, whirl around, go around, get around, become flat, become, see through, see red, go up, go past, go out, go forward, go forth, go down, go by, go bad, going, separate, slice through, put through, push through, get through, travel rapidly, die away, die, strain, stem, still, wind, make vibrant sounds, make noise, make full, make clean, make, mature, travel along, rush along, pelt along, cannonball along, bucket along, belt along, ensue, carry off, carry, range, rupture, lead, start up, start out, decay, dry out, dry, fade out, fade away, fade, subside, practice, conclude, extend to, lower, leave, run low, pass over, ice over, glaze over, glass over, get over, frost over, blow over, clear up, clear, infect, drop off, drop dead, drop, explode, contribute, thought, sustain, fluctuate, bear upon, prevail, fault, perform, enable, reach, give birth, slice into, bump into, break into, evaporate, endure, diminish, undergo, kick the bucket, give-up the ghost, buy the farm, know, bring forth, bring, better, switch, create, let up, let out, kill, collide, ripple, melt, heat up, heat, correct, worry, part, hold, drift, find, spreading, cooccur with, construe with, collocate with, co-occur with, precede, equal, near, draw near, parallel, touch on, pass on, march on, lean on, get on, embark on, catch on, butt on, bear on, attack, strike out, resonate, wake up, wake, think, stay, look sharp, delay, fly high, fly, feed, cut out, cut, play down, oscillate, assume, worst, get dressed, get down, get about, wipe out, vote out, straighten out, set out, sally out, rush out, run out, round out, pop out, plump out, mellow out, leap out, give out, flip out, flesh out, finish out, fill out, fatten out, edit out, crop out, conk out, cancel out, branch out, bottom out, boom out, blot out, right, travel purposefully, travel by, color, split up, split, break up, break down, pass by, bob under, run short, add, reverberate, raise, improve, give up, resume, colour, burst forth, speak, leaving, divide, set aside, set about, set, afflict, cloud, reappear, root, angle, bear, progress, show up, show, sweep away, pull away, pass away, warm up, warm, hot up, speed up, speed, age, wet, rule, state, extend, draw close, close, top off, slack off, round off, pop off, polish off, lay off, finish off, ease off, cool off, flowing, transmit, shock, cure, accelerate, rising, exacerbate, sex up, influence, slide down, slide, intensify, cover, land, report, blow up, offset, hurt, call up, expire, force, tell, prompt, disintegrate, string, entering, sit, yield, pull back, kick back, draw back, back, storm, dwell, breast, learning, vibrate, catch, eliminate, walk, flood, shallow, bottom, render, swell, carbonate, complicate, border, propagate, ease up, ease, full, advance, bump, march, engage, transfer, creep, initiate, put, weaken, ice up, stagnate, calculate, communicate, release, lessen, deciding, harvest, felt up, felt, fold up, fold, lapse, tone down, shear, island hop, bound, deal, slip, compound, feelings, spot, wrap up, wash up, sum up, spice up, soup up, screw up, roll up, pull up stakes, pop up, muck up, mop up, mess up, matte up, mat up, louse up, lighten up, hop up, gear up, fuck up, freshen up, foul up, finish up, fill up, fatten up, climb up, charge up, botch up, bollocks up, bollix up, beef up, ball up, check, lean against, knock against, jar against, butt against, market, glow, race, recede, ash, clash, stand, vote down, tread down, tramp down, shoot down, round down, narrow down, cool down, distress, bounce, flux, depart, translate, anger, forecast, fix, impair, expand, launch, moderate, chord, culminate, pace, enjoy, aggravate, surge, knowing, pull, alleviate, connect, ripen, search, chill, transform, drive, compensate, running, journey, focused, mix, prepare, tread, shake, contaminate, concentrate, stabilize, facilitate, obtain, mold, boil, stray, ready, adjust, regenerate, charge, spike, qualify, dissolve, poison, recurring, obscure, tip, merge, model, crumble, retire, shrinking, edge, push, block, cast, recommend, crawl, retreat, update, narrow, shorten, promote, getting, wander, closing, wear, feeling, weakening, fill, leap, circulating, accommodate, arrest, shooting, steam, repair, radiate, shocking, alternate, motor, adapt, cool, loop, modulate, swing, capture, attend, destroy, strengthen, sink, perish, deliver, freeze, decelerate, telephone, waste, jump, relax, branch, slump, thicken, restrict, thinking, presage, circulate, thrust, proof, hide, exit, bark, shuttle, shade, darken, flutter, resort, fuse, commute, top, bubble, snap, exchange, sweep, float, oxidize, phone, replace, restore, specialize, rattle, rippling, eradicate, interpret, trail, deepen, clean, insist, curse, pink, thread, dull, pride oneself, betake oneself, conform, undo, stall, mutate, read, elaborate, flock, recommence, void, implement, suspect, regret, empty, jumping, precess, witness, troubled, ride, bomb, roam, mark, retrograde, coupling, withdraw, morph, crunch, jolt, tender, confuse, widen, lift, dawn, flap, legitimate, ravage, echo, ameliorate, prelude, format, loose, adopt, circuit, fat, stalemate, pursue, tilt, faint, spurt, buffer, inform, sputter, flame, destabilize, failing, stick, derail, surpass, brush, swim, circle, mildew, blur, glide, catching, slaughter, surround, worm, regress, eventuate, tumble, temper, cruise, brighten, wheel, coalesce, fertilize, attach, bay, normalize, inspire, glass, scorch, mismatch, conjugate, reform, mother, introduce, merging, drone, alien, ghost, meander, swirl, scratch, denature, glance, dim, win, slack, clarify, hurting, rumbling, computing, mingle, disable, plain, awaken, converging, camp, launching, contract, stain, strengthening, sinking, arouse, harbor, arrange, aggregate, lend, overtake, cracking, adhere, abort, cite, shame, convert, torment, cushion, torch, propel, communicating, engender, breeze, deform, attending, soften, decimate, offend, embarrass, breach, blend, suspend, socialize, blind, acquire, career, cook, cream, hitting, beetle, coexisting, rejoice, refresh, fleet, invalidate, sacrifice, splash, convey, swap, rustling, lap, tame, hydrate, mates, choke, specialise, gel, grace, depress, neutralize, synthesize, finishing, believing, implode, blink, revived, grinding, wing, automobile, inflect, recess, bowl, whisk, ski, scramble, foul, blunt, synchronized, omen, beam, erase, animate, devalue, reconstruct, clot, inactivate, chime, cohere, beget, recombine, waning, forecasting, thickening, outcrop, disarray, father, thunder, chatter, stampede, motivate, warp, snarl, adjourn, validate, augur, hue, spoil, bet, alienate, unite, elevate, dwindling, fret, swan, vitiate, entrance, incite, dismiss, sputtering, abut, port, sizzle, sing, pounding, excite, tighten, dirty, ascend, roar, scrape, hurry, quit, nurse, waver, dress, coagulate, abate, inflate, slacken, conjecture, knell, hire, flatten, hum, ferry, rustle, bouncing, pulling, stabilise, incapacitate, spatter, rumble, swerve, growl, surmise, surf, flip, detonate, substitute, pushing, rub, pinch, gum, sauce, resound, clutter, distort, whine, rout, scourge, sober, entertain, shipwreck, interchange, repress, rectify, muddy, screeching, slam, amend, winning, annihilate, crying, visualize, patent, scream, sadden, humming, spat, harden, pad, copy, ionize, summarize, quote, unfit, discolor, extinguish, bang, plume, corrupt, writhe, hug, crackle, equate, overturn, yaw, nip, spice, harbour, loosen, roaring, overhaul, blackmail, grate, fumble, crush, leveling, splay, joy, pride, simplify, drubbing, whoosh, ricochet, glaze, motivating, crow, crackling, lock, re-emerge, destabilise, glisten, retard, crumple, blister, fluttering, optimize, splatter, discontinue, prostrate, saturate, broaden, allege, dispatch, rack, snore, weave, tram, sanctify, zigzag, equalize, stiffen, bestow, polarize, impart, twitch, whisper, taxi, straighten, remembering, hissing, automate, screaming, socialise, sublimate, pan, rove, liquefy, squash, checkmate, plump, sympathize, edit, redress, meld, wearing, normalise, decorate, hydrolyze, guessing, metamorphose, desalinate, disqualify, mellow, transpose, detach, err, mince, transmute, profane, sorting, waltz, forfeit, commingle, overthrow, purify, focussed, lighten, acquiring, dizzy, flapping, shoal, preexisting, billow, insulate, diversify, sharpen, thrashing, chattering, pity, veil, pulsing, subdue, cling, deflate, undulate, pulsate, grumbling, solemnize, zip, equalise, humiliate, revolutionize, polarise, gong, whipping, crank, assimilate, ladder, ventilate, refine, dribble, purge, steepen, gobble, dent, scratching, adorn, revolutionise, zoom, riffle, growling, caravan, whitewash, howl, sequester, digest, ramble, agitate, lance, scraping, deaden, foreboding, harp, amalgamate, pound, creak, ditto, lurch, pin, cleave, copying, sire, slither, careen, energize, pall, vacillate, skirt, liberalize, demoralize, pierce, grunt, paraphrase, dramatize, blare, incline, slosh, forge, whispering, swoon, romp, calcify, rationalize, obliterate, wrestle, whirlpool, honk, glinting, mash, synchronised, squeak, sensitize, customize, nick, wager, overreach, harmonize, eddy, glorify, vex, glittering, tweet, stanch, dope, barb, twinge, racket, fatten, liquify, splat, optimise, radicalize, clamor, unify, shrieking, belch, blaring, sift, shriek, ornament, mishandle, deactivate, humble, neutralise, inaugurate, sympathise, fertilise, shimmy, lubricate, flex, coerce, lace, screech, emulsify, scintillating, chug, jingling, wrack, pant, domesticate, bungle, rejuvenate, looping, squirm, fray, flaming, objectify, leaning, raft, chasten, invert, immortalize, piggyback, jangling, waxing, womanize, westernise, vulgarize, vulgarise, vulcanize, vulcanise, volatilize, volatilise, vivify, vitrify, vitalise, virilize, virilise, vesiculate, verbify, vaticinate, vascularize, vascularise, variegate, vaporise, urbanise, untune, unsubstantialize, unsubstantialise, unsex, unsanctify, uniformize, uniformise, unclutter, ulcerate, uglify, twirp, transubstantiate, transitivize, transitivise, transfigure, transaminate, tintinnabulate, ticktack, territorialize, territorialise, tenderise, syncopate, symmetrize, symmetrise, swosh, susurrate, suspire, superannuate, suburbanize, suburbanise, subtilize, splosh, spiritualize, soughing, solvate, solemnise, solarize, solarise, slenderize, slenderise, shrilling, sexualize, sexualise, sentimentalise, sensify, sensibilize, sensibilise, second-guess, scintillate, schematize, schematise, scandalise, saponify, salinate, rusticate, romanticise, resile, renormalize, renormalise, refreshen, rarify, rarefy, ramify, pulverise, preordain, predestine, plasticize, plasticise, plash, pitter-patter, perseverate, paganize, paganise, oxygenize, oxygenise, oxidate, overcloud, outmode, ossify, orientalize, orientalise, opsonize, opalize, opalise, opacify, officialize, officialise, occidentalize, occidentalise, obsolesce, obnubilate, nicker, nazify, mythologise, mythicize, mythicise, mussitate, mismate, misfunction, miscreate, minify, militarise, miaow, miaou, meliorate, mechanise, matt-up, masculinize, masculinise, magnetise, luxate, liquidize, liquidise, lifehack, laicize, laicise, keratinize, keratinise, jounce, jingle-jangle, isomerize, isomerise, ionise, ionate, iodinate, introject, intransitivize, intransitivise, inspissate, indurate, individualise, indispose, incandesce, importune, immortalise, immix, immaterialize, immaterialise, hydrogenate, horripilate, harshen, guggle, gradate, glamourize, glamourise, glamorise, gelatinize, gelatinise, foreordain, flocculate, festinate, feminise, fecundate, extravasate, externalise, exteriorize, exteriorise, evanesce, etiolate, etherialise, etherealize, eternize, eternise, eternalize, eternalise, eroticize, envenom, embrittle, effeminize, effeminise, dynamize, dynamise, domesticize, domesticise, dissonate, dissimilate, disharmonize, disenable, discolour, disaffect, dilapidate, digitalise, diabolize, diabolise, devilize, devilise, detransitivize, detransitivise, destress, desensitise, desalt, desalinize, desalinise, deprave, depolarise, depersonalise, deoxidize, deoxidise, deodourise, deodorise, denaturalize, denaturalise, denationalize, denationalise, demythologize, demythologise, demulsify, demist, dematerialize, dematerialise, demagnetize, demagnetise, dehydrogenate, degauss, defog, defervesce, decrepitate, deconcentrate, decimalize, decimalise, decarboxylate, decalcify, deaminize, deaminate, de-emphasise, creolize, counterchange, coruscate, conventionalize, conventionalise, constitutionalize, constitutionalise, concretise, complexify, communize, communise, commove, commix, colourize, colourise, colorise, collimate, coggle, coarsen, claxon, classicize, classicise, clangour, clangoring, civilise, circularize, chitter, caterwaul, caseate, capacitate, cackel, brutalise, bombinate, bombilate, bolshevize, bolshevise, bollix, bodge, blear, bestialize, bestialise, bemire, begrime, bedim, barbarize, barbarise, avianize, avianise, automatize, automatise, attemper, assibilate, arterialize, arterialise, archaize, archaise, appal, antiquate, animize, animise, animalize, animalise, angulate, allegorize, allegorise, alkalinize, alkalinise, alcoholize, alcoholise, alchemize, alchemise, aggrandise, achromatize, achromatise, acetylize, acetylise, acetylate, acerbate, abash, abase, summarise, butt, desensitize, repent, hale, boding, honeycomb, sublime, chafe, squelch, clinker, broadside, subvert, grumble, clap, fasten, romanticize, embroider, tenderize, lob, demonise, botch, bray, splattering, commercialize, dislocate, twirl, clucking, creaking, untie, walloping, suffuse, unscramble, skunk, nationalize, throb, distill, supple, depolarize, modernize, wallop, freshen, plow, fume, liberalise, reestablish, peep, visualise, dramatise, occult, stratify, recapture, spattering, naturalize, personalize, babble, habituate, distil, hurtle, banging, dribbling, wink, squish, dub, coo, contort, tinkling, brutalize, jumpstart, overfly, aerate, estrange, jerk, uncovering, caw, supercharge, carom, hiss, antique, oxidise, ravel, reclaim, mat, matte, grime, exasperate, dab, rephrase, sweeten, mumble, outflank, burble, snowshoe, demoralise, waken, democratize, yelp, fortify, embellish, downplay, swoosh, croak, industrialize, forestalling, beautify, slush, rear-end, rue, shack, appall, prophesy, rouse, cremate, perplex, reinstate, commercialise, weaponize, centralize, misdirect, plop, demolish, plough, externalize, mortify, buckle, clatter, aver, feminize, flub, trump, clack, foretelling, hydrolyse, fluff, glamorize, squawk, redo, impel, reticulate, humanize, stub, harmonise, pulverize, din, uprise, wrecking, smoothen, sanitize, politicise, maunder, lard, baa, debase, politicize, bumble, digitize, congratulate, chagrin, purl, obfuscate, razing, cackle, meow, demonize, steamer, reorient, staunch, conflate, vitalize, pervert, bollocks, customise, individualize, clank, wriggle, conk, nationalise, inseminate, pressurize, wheeling, hush, accustom, bleat, trundle, blackjack, whizz, rationalise, bobble, sentimentalize, exemplifying, reword, fluster, moo, wend, scandalize, civilize, naturalise, trouncing, smut, splutter, concretize, pressurise, aggrandize, de-emphasize, remodel, redact, consummate, decentralize, kibosh, internationalise, prance, westernize, sensitise, vagabond, modernise, introvert, yelping, urbanize, professionalize, industrialise, ticktock, twiddle, clang, synchronising, decentralise, prim, deodorize, colorize, magnetize, cluck, basset, professionalise, centralise, debauch, depersonalize, tramp, hie, democratise, sanitise, militarize, environ, yip, mew, blinker, glug, muff, mechanize, swash, internationalize, digitalize, scrunch, outguess, winkle, clangor, spirt, whicker, jump-start, dinge, energise, neigh, mythologize, whinny, crump, reflate, hushing, digitise, plonk, louden, oink, tweedle, personalise, hotfoot, colly, humanise, tink, cheep, spang, whish, cause celebre, final result, sex change, change of location, human activity, consequence, infection, turn of events, phenomenon, matter of course, even chance, disruption, inevitable, higher cognitive process, basic cognitive process, mutation, genetic mutation, chromosomal mutation, transmission, equipment failure, outcome, variation, good time, migration, growth, volcanic eruption, human action, effective, disturbance, end of the world, day of reckoning, day, loss of consciousness, loss, fresh start, separation, death, out-of-body experience, near-death experience, breakdown, bad luck, event, dramatic event, hunting ground, ground floor, epidemic, complication, crisis, foregone conclusion, current, accidental, periodic movement, periodic motion, heat flash, final stage, moving ridge, collision, cam stroke, explosion, destruction, activation, software error, programming error, hardware error, algorithm error, deformation, good luck, forest fire, origin, acceleration, interference, reality check, lightning, transformation, emergence, happy chance, termination, resultant, prairie fire, brush fire, watershed, electrical discharge, flood tide, heartbeat, deceleration, impairment, consequent, subsidence, merger, tectonic movement, crustal movement, oscillation, scene, head trip, drum roll, mishap, abortion, generation, engagement, implementation, condensation, detonation, miscarriage, passage, sunrise, suspension, hiatus, creation, brass ring, tremendous, dislocation, efficient, rhythm, relief, initiation, induction, fusion, conception, white backlash, incidental, retardation, humiliation, breakup, clean slate, misfortune, contagion, third-place finish, second-place finish, runner-up finish, photo finish, inception, malformation, audience, conversion, sunset, hell, vision, continual, song, ordeal, commotion, conflagration, scandal, wonderful, embarrassment, drama, victory, fluctuation, moderation, standoff, inadvertent, milestone, jitter, debacle, miraculous, chapter, opportune, street, flashback, karma, downfall, punctuation, occultation, synchronous, revolution, pulsation, convergent, detachment, affliction, deflection, antecedent, unison, onslaught, fantastic, immersion, landmark, reappearance, actuation, destabilization, grand, straits, demolition, implosion, propulsion, terrific, abatement, happenstance, outgrowth, rematch, tossup, efficacious, simultaneity, fiasco, footstep, effector, upshot, avulsion, reversion, expiry, drumbeat, apparition, convulsion, repercussion, insistence, transmutation, idyll, actuator, iterative, wondrous, sublimation, wipeout, bonfire, unification, deed, predestination, campfire, nativity, whammy, genesis, conjuncture, sideshow, drop-off, ramification, vibrato, inferno, ingress, zizz, whitelash, vagary, troublous, tintinnabulation, synchronal, susurrus, susurration, simultaneousness, rub-a-dub, repetitiousness, reiterative, recrudescent, rataplan, preindication, pedesis, paradiddle, nascency, nascence, mussitation, murmuration, miscreation, mischance, insistency, imperativeness, grassfire, foretoken, flame-out, ensuant, effectuation, effecter, doubleton, deflexion, coruscation, contemporaneousness, concomitance, clippety-clop, clip-clop, click-clack, bombination, bombilation, balefire, amphimixis, marvelous, omega, lottery, doomsday, blowup, salvo, kismet, footfall, mortification, origination, throwback, atavism, repetitiveness, synchronic, marvellous, fadeout, toss-up, tripper, scintillation, undulation, evanescence, augury, ruination, sequent, thunk, effectual, casus belli, barnburner, zing, kismat, contemporaneity, tabula rasa, side effect, position effect, placebo effect, knock-on effect, domino effect, coattails effect, butterfly effect, bandwagon effect, sea change, good example, possible, activity, tin disease, wave form, problem, surface fire, well timed, coming back, trade cycle, menstrual cycle, cardiac cycle, business cycle, precipitation, onset, thought process, representational process, linguistic process, point mutation, gene mutation, skeleton in the cupboard, skeleton in the closet, live birth, evident, power failure, engine failure, brake failure, difference, population shift, starting time, wave shape, variable, diurnal variation, daily variation, subsequent, going away, tin plague, background signal, human death, way, slack water, low water, high water, response, prior, end point, end game, running start, racing start, flying start, underway, road to Damascus, pain sensation, light touch, wrongful death, progression, low tide, physical contact, concentration, unsuccessful person, sales event, ground swell, ground fire, distribution, just deserts, travelling wave, traveling wave, tidal wave, stationary wave, standing wave, sound wave, sine wave, shock wave, rolling wave, gravity wave, gravitation wave, crestless wave, blast wave, acoustic wave, abundance, posthumous birth, abundant, painful sensation, speech act, dead reckoning, dead heat, apparent, static, atmospheric static, heat lightning, action replay, last laugh, reproduction, rotation, production, tragedy, discovery, stopping point, burn mark, gravitational collapse, forcing out, falling out, carrying out, service break, critical, dramatic, syntax error, semantic error, runtime error, run-time error, disk error, unintended, recovery, improvement, contagious, pandemic, tidal, partial eclipse, power outage, motive power, perception, ongoing, breath of fresh air, product, attention, visual aspect, disaster, war cloud, good, catastrophe, atmospheric electricity, running away, dwindling away, white noise, outage, speech sound, attrition, vibration, opening night, night terror, fatality, first, rising tide, decision making, memory, communication, execution, weakness, divergence, driving force, fertilization, fragmentation, crown fire, high tide, stimulation, big bang, total eclipse, solar eclipse, lunar eclipse, nervous impulse, nerve impulse, shrinkage, aftermath, departure, decision, curtain raising, tsunami, variant, language, inflation, consolidation, germination, deletion, prediction, extraordinary, replication, mixture, latest, digging up, recombination, morning, persistent, distortion, neural impulse, fallout, adjustment, ill, remission, completion, hypothesis, harmonic motion, discrimination, spectacular, priority, closer, trial, horrific, destination, emergency, alignment, manageable, cyclical, habitual criminal, psychological science, casualty, classification, sale, cut-rate sale, circulation, standstill, degeneration, preliminary, hardship, assumption, assessment, imperative, speculation, byproduct, replacement, vector sum, slack tide, leeward tide, lee tide, rift,