| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | inexcusable |
| Synonyms: | bad, faulty, inexpiable, insupportable, unforgivable, unjustifiable, unpardonable, untenable, unwarrantable, wrong |
| Antonyms: | defensible, excusable, justifiable, justified |
| 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: | lying |
| Part of Speech: | adjective |
| Definition: | dishonest |
| Synonyms: | committing perjury, deceitful, deceptive, delusive, delusory, dissembling, dissimulating, double-crossing, double-dealing, equivocating, false, falsifying, fibbing, guileful, inventing, mendacious, misleading, misrepresenting, misstating, perfidious, prevaricating, shifty, treacherous, tricky, two-faced, two-timing, unreliable, untruthful, wrong |
| Antonyms: | direct, frank, honest |
| Main Entry: | mendacious |
| Part of Speech: | adjective |
| Definition: | dishonest |
| Synonyms: | deceitful, deceptive, duplicitous, equivocating, erroneous, fallacious, false, fibbing, fraudulent, insincere, lying, paltering, perfidious, perjured, prevaricating, shifty, spurious, untrue, untruthful, wrong |
| Antonyms: | frank, honest, sincere, truthful |
| Main Entry: | misguided |
| Part of Speech: | adjective |
| Definition: | ill-advised, deluded |
| Synonyms: | bearded, bum-steer, confused, deceived, disinformed, erroneous, faked-out, foolish, imprudent, indiscreet, inexpedient, injudicious, led up the garden path, misled, misplaced, mistaken, stonewalled, uncalled for, unreasonable, unwarranted, unwise, wrong |
| Antonyms: | well-guided |
| Main Entry: | misleading |
| Part of Speech: | adjective |
| Definition: | deceptive, confusing |
| Synonyms: | ambiguous, beguiling, bewildering, casuistical, catchy, confounding, deceitful, deceiving, deluding, delusive, delusory, demagogic, disingenuous, distracting, evasive, fallacious, false, inaccurate, perplexing, puzzling, sophistical, specious, spurious, tricky, wrong |
| Antonyms: | honest, truthful |
| Main Entry: | naughty |
| Part of Speech: | adjective |
| Definition: | bad, misbehaved |
| Synonyms: | annoying, badly behaved, contrary, disobedient, disorderly, evil, exasperating, fiendish, fractious, froward, headstrong, impish, indecorous, insubordinate, intractable, mischievous, obstreperous, perverse, playful, rascally, raunchy, recalcitrant, refractory, rough, rowdy, sinful, teasing, tough, ungovernable, unmanageable, unruly, wanton, wayward, wicked, willful, worthless, wrong |
| Antonyms: | behaved, controlled, good, obedient |
| Main Entry: | pseudo |
| Part of Speech: | adjective |
| Definition: | artificial, fake |
| Synonyms: | bogus, counterfeit, ersatz, false, imitation, mock, not genuine, not kosher, not legit, not real, phony, pirate, pretend, pretended, quasi, sham*, simulated, spurious, wrong |
| Notes: | pseudo is a prefix meaning 'counterfeit, deceptive, false' and it requires a hyphen when joined to a proper noun; quasi is a prefix meaning 'resembling' or 'in some manner' and it is usually hyphenated to a noun |
| Antonyms: | genuine, real, true |