unsuccessful Meaning, Definition & Usage

  1. adjective not successful; having failed or having an unfavorable outcome
  2. adjective satellite failing to accomplish an intended result
    abortive; stillborn.
    • an abortive revolt
    • a stillborn plot to assassinate the President

WordNet


Un`suc*cess"ful adjective
Definitions
  1. Not successful; not producing the desired event; not fortunate; meeting with, or resulting in, failure; unlucky; unhappy. -- Un`suc*cess"ful*ly, adv. -- Un`suc*cess"ful*ness, n.

Webster 1913