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| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | without substantiation |
| Synonyms: | bottomless, flimsy, foundationless, gratuitous, groundless, reasonless, unconfirmed, uncorroborated, unfounded, ungrounded, unjustifiable, unjustified, unsubstantiated, unsupported, untenable, unwarranted |
| Antonyms: | based |
| Main Entry: | gratuitous |
| Part of Speech: | adjective |
| Definition: | not necessary |
| Synonyms: | assumed, baseless, bottomless, causeless, groundless, indefensible, inessential, needless, reasonless, supererogatory, superfluous, uncalled-for, unessential, unfounded, unjustified, unmerited, unprovoked, unsupportable, unwarranted, wanton |
| Notes: | grateful means feeling or showing gratitude or feeling thankful; gratified means having received what was desired; gratuitous means costing nothing or free - unnecessary or unwarranted - without cause |
| Antonyms: | deserved, needed, reasonable, warranted |
| Main Entry: | groundless |
| Part of Speech: | adjective |
| Definition: | without reason, justification |
| Synonyms: | baseless, bottomless, causeless, chimerical, empty, false, flimsy, foundationless, gratuitous, idle, illogical, illusory, imaginary, unauthorized, uncalled-for, unfounded, unjustified, unprovoked, unsupported, unwarranted |
| Antonyms: | called-for, grounded, justified, proven, reasonable, warranted |
| Main Entry: | invalid |
| Part of Speech: | adjective |
| Definition: | worthless; unfounded |
| Synonyms: | bad, baseless, fallacious, false, ill-founded, illogical, inoperative, irrational, mad, not binding, not working, nugatory, null, null and void, reasonless, sophistic, unreasonable, unreasoned, unscientific, unsound, untrue, void, wrong |
| Antonyms: | sound, valid, worthwhile, worthy |
| Main Entry: | nonexistent |
| Part of Speech: | adjective |
| Definition: | fictional, not real |
| Synonyms: | absent, airy, baseless, blank, chimerical, dead, defunct, departed, dreamlike, dreamy, empty, ethereal, extinct, extinguished, fancied, few and far between, flimsy, gone, gossamery, groundless, hallucinatory, hypothetical, illusory, imaginary, imagined, immaterial, imponderable, insubstantial, legendary, lost, missing, mythical, negative, null, null and void, passed away, passed on, perished, shadowy, tenuous, ungrounded, unreal, unsubstantial, vacant, vague, vaporous, void, without foundation |
| Antonyms: | actual, existent, existing, real, true |
| Main Entry: | unfounded |
| Part of Speech: | adjective |
| Definition: | not based on fact |
| Synonyms: | baseless, bottomless, deceptive, fabricated, fallacious, false, foundationless, gratuitous, groundless, idle, illogical, mendacious, misleading, off-base, spurious, trumped up, uncalled-for, unjustified, unproven, unreal, unsubstantiated, untrue, untruthful, unwarranted, vain, without basis, without foundation |
| Antonyms: | founded, justified, proven, substantiated, supported |
| Main Entry: | unjustifiable |
| Part of Speech: | adjective |
| Definition: | unwarranted |
| Synonyms: | baseless, foundationless, groundless, indefensible, inexcusable, uncalled-for, unconscionable, unforgivable, unfounded, ungrounded, unjust, unjustified, unmerited, unpardonable, wrong |
| Notes: | an unjustified act is one for whose justification no past event or development can be adduced; an unjustifiable act is one for whose justification no future event or development can be adduced |
| Main Entry: | unwarranted |
| Part of Speech: | adjective |
| Definition: | not reasonable or right |
| Synonyms: | baseless, bottomless, foundationless, gratuitous, groundless, indefensible, inexcusable, uncalled-for, unconscionable, undue, unfair, unfounded, ungrounded, unjust, unjustifiable, unjustified, unprovoked, unreasonable, unwarrantable, wrong |
| Antonyms: | called-for, justifiable, reasonable, warranted |
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
