suspicious Meaning, Definition & Usage

  1. adjective satellite openly distrustful and unwilling to confide
    untrusting; leery; mistrustful; wary.
  2. adjective satellite not as expected
    funny; shady; suspect; fishy.
    • there was something fishy about the accident
    • up to some funny business
    • some definitely queer goings-on
    • a shady deal
    • her motives were suspect
    • suspicious behavior

WordNet

Sus*pi"cious adjective
Etymology
OE. suspecious; cf. L. suspiciosus. See Suspicion.
Definitions
  1. Inclined to suspect; given or prone to suspicion; apt to imagine without proof.
    Nature itself, after it has done an injury, will ever be suspicious; and no man can love the person he suspects. South.
    Many mischievous insects are daily at work to make men of merit suspicious of each other. Pope.
  2. Indicating suspicion, mistrust, or fear.
    We have a suspicious, fearful, constrained countenance. Swift.
  3. Liable to suspicion; adapted to raise suspicion; giving reason to imagine ill; questionable; as, an author of suspicious innovations; suspicious circumstances.
    I spy a black, suspicious, threatening could. Shak.
    Syn. -- Jealous; distrustful; mistrustful; doubtful; questionable. See Jealous. -- Sus*pi"cious*ly, adv. -- Sus*pi"cious*ness, n.

Webster 1913