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| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | useless |
| Synonyms: | fruitless, futile, idle, ineffectual, unavailing, vain, worthless |
| 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: | 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 |
* = informal/non-formal usage
| Main Entry: | vain |
| Part of Speech: | adjective |
| Definition: | futile, useless |
| Synonyms: | abortive, barren, bootless, delusive, delusory, empty, frivolous, fruitless, going nowhere, hollow, idle, in vicious circle, inefficacious, insignificant, misleading, no-win, not a prayer, nugatory, on a treadmill, otiose, paltry, petty, pointless, profitless, puny, senseless, shuck, slight, sterile, time-wasting, trifling, trivial, unavailing, unimportant, unnotable, unproductive, unprofitable, valueless, void, worthless |
| Antonyms: | possible |
| Main Entry: | ineffective |
| Part of Speech: | adjective |
| Definition: | useless |
| Synonyms: | abortive, anticlimactic, barren, bootless, defeasible, emasculate, feckless, feeble, forceless, fruitless, futile, idle, impotent, inadequate, incompetent, indecisive, ineffectual, inefficacious, inefficient, inept, inferior, innocuous, inoperative, lame, limited, neutralized, no go, no way, not effective, nugatory, null, paltry, powerless, slack-spined, spineless, unable, unavailable, unavailing, unfruitful, unproductive, unprofitable, unsuccessful, vain, void, withered, worthless |
| Notes: | ineffectual refers to a general or habitual lack of success in the carrying out of one's projects; ineffective refers to a specific or definite failure to perform a task or accomplish a purpose |
| Antonyms: | effective |
| Main Entry: | inefficacious |
| Part of Speech: | adjective |
| Definition: | ineffectual |
| Synonyms: | abortive, anticlimactic, barren, bootless, defeasible, feckless, feeble, forceless, fruitless, futile, idle, impotent, inadequate, incompetent, indecisive, ineffective, inefficient, inept, inferior, innocuous, inoperative, invertebrate, lame, limited, neutralized, nugatory, null, null and void, paltry, powerless, spineless, unable, unavailing, unfruitful, unproductive, unprofitable, unsuccessful, useless, vain, void, withered, worthless |
| Main Entry: | inutile |
| Part of Speech: | adjective |
| Definition: | useless |
| Synonyms: | abortive, bootless, counterproductive, disadvantageous, dysfunctional, expendable, feckless, fruitless, futile, good-for-nothing, hopeless, idle, impracticable, impractical, incompetent, ineffective, ineffectual, inept, inoperative, meaningless, no good, nonfunctional, of no use, pointless, profitless, purposeless, scrap, stupid*, unavailable, unavailing, unfunctional, unproductive, unprofitable, unpurposed, unusable, unusuable, unworkable, vain, valueless, waste, weak, worthless |
* = informal/non-formal usage
| Main Entry: | unusable |
| Part of Speech: | adjective |
| Definition: | useless |
| 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 |
* = informal/non-formal usage
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
