| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | expressionless, especially |
| Synonyms: | cold, dazed, dull, empty, fixed, glazed, lifeless, referring to eyes blank, stupid, vacant |
| Antonyms: | shining, smiling |
| Main Entry: | idiot |
| Part of Speech: | noun |
| Definition: | very stupid person |
| Synonyms: | blockhead, bonehead, cretin, dimwit, dork, dumbbell, dunce, fool, ignoramus, imbecile, jerk, kook, moron, muttonhead, nincompoop, ninny, nitwit, out to lunch, pinhead, simpleton, stupid, tomfool, twit |
| Notes: | an idiot is a stupid person with a mental age below three years, while a moron is a stupid person with a mental age of between seven to twelve years |
| Antonyms: | brain |
| Main Entry: | impolitic |
| Part of Speech: | adjective |
| Definition: | unwise, careless |
| Synonyms: | brash, ill-advised, ill-judged, imprudent, inadvisable, inconsiderate, indiscreet, inexpedient, injudicious, maladroit, misguided, rash, stupid, tactless, undiplomatic, untimely |
| Antonyms: | careful, cautious, discreet, politic, wise |
| Main Entry: | inapt |
| Part of Speech: | adjective |
| Definition: | incompetent; not suitable |
| Synonyms: | awkward, banal, clumsy, dull, flat, gauche, ill-adapted, ill-fitted, ill-suited, improper, inadept, inapposite, inappropriate, incongruous, inept, inexperienced, inexpert, infelicitous, insipid, jejune, maladroit, malapropos, slow, stupid, unable, undexterous, unfacile, unfit, unhandy, unmeet, unproficient, unskilled, unsuitable, unsuited, untimely |
| Notes: | inapt is 'not suitable or appropriate' while unapt is 'not likely or inclined' |
| Antonyms: | apt, competent, happy, suitable, suited |
| Main Entry: | insipid |
| Part of Speech: | adjective |
| Definition: | dull, uninteresting |
| Synonyms: | anemic, arid, banal, beige, blah*, bland, characterless, colorless, commonplace, dead*, drab, driveling, dry, feeble, flat, ho-hum, inane, innocuous, jejune, lifeless, limp, mild, mundane, nebbish, nothing, ordinary, plain, pointless, prosaic, prosy, slight, soft*, spiritless, stale, stupid, subdued, tame, tedious, tenuous, thin, tired, trite, unimaginative, vapid, watery, weak, weariful, wearisome, wishy-washy |
| Notes: | sipid - of pleasing taste, flavor, or character - is the opposite of insipid |
| Antonyms: | exciting, exhilarating, interesting, pleasing |
| 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: | listless |
| Part of Speech: | adjective |
| Definition: | spiritless, without energy |
| Synonyms: | absent, abstracted, apathetic, blah*, bored, careless, dormant, dreamy, drowsy, dull, easygoing, energyless, enervated, faint, heavy, heedless, impassive, inanimate, inattentive, indifferent, indolent, inert, insouciant, lackadaisical, lagging, laid-back*, languid, languishing, languorous, leaden, lethargic, lifeless, limp, lukewarm, lymphatic, mopish, neutral, out of it, passive, phlegmatic, slack, sleepy, slow, sluggish, stupid, supine, thoughtless, torpid, uninterested, vacant |
| Antonyms: | active, alert, attentive, energetic, lively, untired |
| Main Entry: | lunatic |
| Part of Speech: | adjective |
| Definition: | crazy, mad |
| Synonyms: | absurd, baked, balmy*, bananas, bonkers*, cracked, crazed, daft, demented, deranged, dippy, flaky*, flipped out, foolish, freaked out, fried, idiotic, insane, irrational, kooky, loco, maniac, maniacal, nonsensical, nutty, preposterous, psyched out, psychotic, schizoid, screwy, stupid, unsound, whacko, zany |
| Antonyms: | healthy, sane, sensible |
| Main Entry: | madcap |
| Part of Speech: | adjective |
| Definition: | crazy, impulsive |
| Synonyms: | brash, foolhardy, foolish, frivolous, harebrained, heedless, hotheaded, ill-advised, imprudent, incautious, inconsiderate, lively, rash, reckless, stupid, thoughtless, wild |
| Antonyms: | reasonable, sane |