| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | failing to achieve a goal |
| Synonyms: | failed, failing, fruitless, futile, ineffective, ineffectual, miscarried, unavailing, unproductive, unsuccessful, useless, vain, worthless |
| Antonyms: | complete, consummated, effectual, efficient, fruitful, productive, successful |
| Main Entry: | futile |
| Part of Speech: | adjective |
| Definition: | hopeless, pointless |
| Synonyms: | abortive, barren, bootless, delusive, empty, exhausted, forlorn, fruitless, hollow, idle, impracticable, impractical, in vain, ineffective, ineffectual, insufficient, no dice, nugatory, on a treadmill, otiose, out the window, profitless, resultless, save one's breath, sterile, to no avail, to no effect, to no purpose, trifling, trivial, unavailing, unimportant, unneeded, unproductive, unprofitable, unreal, unsatisfactory, unsubstantial, unsuccessful, useless, vain, valueless, worthless |
| Antonyms: | fruitful, hopeful, productive, profitable |
| Main Entry: | idle |
| Part of Speech: | adjective |
| Definition: | worthless, ineffective |
| Synonyms: | abortive, bootless, empty, frivolous, fruitless, futile, groundless, hollow, insignificant, irrelevant, not serious, nugatory, of no avail, otiose, pointless, rambling, superficial, trivial, unavailing, unhelpful, unnecessary, unproductive, unsuccessful, useless, vain |
| Notes: | idle means not in action or at work; idyll means a simple descriptive work, either in poetry or prose, dealing with simple, rustic life - or a lighthearted carefree episode or experience; idyllic means excellent and delightful in all respects |
| Antonyms: | effective, important, productive, worthwhile |
| Main Entry: | ineffective/ineffectual |
| Part of Speech: | adjective |
| Definition: | weak, useless |
| Synonyms: | abortive, anticlimactic, barren, bootless, defeasible, feckless, feeble, forceless, fruitless, futile, idle, impotent, inadequate, incompetent, indecisive, inefficacious, inefficient, inept, inferior, innocuous, inoperative, invertebrate, lame, limited, neutralized, nugatory, null, null and void, paltry, powerless, spineless, unable, unavailing, unfruitful, unproductive, unprofitable, unsuccessful, vain, void, withered, worthless |
| Antonyms: | competent, effective, effectual, efficient, powerful, strong, useful |
| Main Entry: | premature |
| Part of Speech: | adjective |
| Definition: | earlier in occurrence than anticipated |
| Synonyms: | a bit previous, abortive, early on, embryonic, forward, green*, immature, incomplete, inopportune, overearly, oversoon, precipitate, predeveloped, previous, raw*, soon, unanticipated, undeveloped, unfledged, unripe, untimely |
| Antonyms: | backward, delayed, late, mature, overdue |
| Main Entry: | undeveloped |
| Part of Speech: | adjective |
| Definition: | immature |
| Synonyms: | abortive, backward, behindhand, embryonic, half-baked, ignored, inchoate, incipient, inexperienced, latent, potential, primitive, primordial, unactualized, underdeveloped, unevolved, unprogressive, untaught, untrained |
| Antonyms: | adult, developed, grown, mature |
| Main Entry: | unsuccessful |
| Part of Speech: | adjective |
| Definition: | failing |
| Synonyms: | abortive, defeated, disastrous, doomed, failed, foiled, fruitless, futile, ill-fated, ineffective, ineffectual, losing, thwarted, unlucky, useless, vain |
| Main Entry: | untimely |
| Part of Speech: | adjective |
| Definition: | inappropriate |
| Synonyms: | a bit previous, abortive, anachronistic, awkward, badly timed, bright and early, disagreeable, early, early bird, early on, ill-timed, improper, inauspicious, inconvenient, inexpedient, inopportune, intrusive, malapropos, mistimed, out-of-date, overearly, oversoon, premature, previous, soon, too early, too late, undue, unfavorable, unfit, unfortunate, unlucky, unpropitious, unseasonable, unseemly, unsuitable, unsuited, wrong |
| Antonyms: | appropriate, opportune, timely |
| Main Entry: | useless |
| Part of Speech: | adjective |
| Definition: | not working; not valuable |
| Synonyms: | abortive, bootless, counterproductive, disadvantageous, dysfunctional, expendable, feckless, fruitless, futile, good-for-nothing, hopeless, idle, impracticable, impractical, incompetent, ineffective, ineffectual, inept, inoperative, inutile, meaningless, no good, nonfunctional, of no use, pointless, profitless, purposeless, scrap, stupid*, unavailable, unavailing, unfunctional, unproductive, unprofitable, unpurposed, unusuable, unworkable, vain, valueless, waste, weak, worthless |
| Antonyms: | helpful, usable, useful, valuable, working, worthwhile |