| Main Entry: | baseless |
| 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: | fallacious |
| Part of Speech: | adjective |
| Definition: | false, wrong |
Synonyms: |
beguiling, deceiving, deceptive, deluding, delusive, delusory, erroneous, fictitious, fishy, fraudulent, illogical, illusory, incorrect, invalid, irrational, mad, misleading, mistaken, off*, phony, reasonless, sophistic, sophistical, spurious, unfounded, ungrounded, unreal, unreasonable, unreasoned, unsound, untrue, way off |
| Notes: | fallacious means intended to deceive; fallible means liable to make a mistake or to be inaccurate or erroneous; false means not in accordance with the fact or reality or actuality, or deliberately deceptive, or not genuine or real |
Antonyms: |
correct, real, true, truthful |
| 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 |
Antonyms: |
deserved, needed, 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: | irrational |
| Part of Speech: | adjective |
| Definition: | illogical, senseless |
Synonyms: |
aberrant, absurd, brainless, cockamamie, crazy, delirious, demented, disconnected, disjointed, distraught, fallacious, flaky*, foolish, freaky, incoherent, injudicious, insane, invalid, kooky, loony, mad, mindless, nonsensical, nutty, off-the-wall, preposterous, raving, reasonless, ridiculous, silly, sophistic, specious, stupid, unreasonable, unreasoning, unsound, unstable, unthinking, unwise, wacky*, wild, wrong |
Antonyms: |
logical, rational, reasonable, reflective, sensible, sound, stable |
| Main Entry: | unreasonable |
| Part of Speech: | adjective |
| Definition: | not logical or sensible |
Synonyms: |
absurd, all wet, arbitrary, biased, capricious, contradictory, erratic, fallacious, far-fetched, foolish, full of hot air, headstrong, illogical, incoherent, incongruous, inconsequential, inconsistent, invalid, irrational, loose, mad, nonsensical, off the wall, opinionated, preposterous, quirky, reasonless, senseless, silly, stupid, thoughtless, unreasoned, vacant, wrong |
Antonyms: |
logical, practical, pragmatic, realistic, reasonable, sensible |
| Main Entry: | sophistic |
| Part of Speech: | adjective |
| Definition: | fallacious |
Synonyms: |
beguiling, deceiving, deceptive, deluding, delusive, delusory, erroneous, false, fictitious, fishy, fraudulent, illogical, illusory, incorrect, invalid, irrational, mad, misleading, mistaken, off*, phony*, reasonless, sophistical, specious, spurious, unfounded, ungrounded, unreal, unreasonable, unreasoned, unsound, untrue, way off |