ill-bred, adj. ill-mannered, bad-mannered, unmannerly, rude, impolite, uncivil, unceremonious, discourteous, disrespectful, misbehaved; indelicate, uncourt-ly, ungallant, indecorous, ungracious; ungentlemanly, unladylike; brash, bold, hoydenish, Scot, randy; brazen, barefaced, insolent, impudent, insulting, impertinent, pert, saucy, fresh; bluff, surly, sullen, bearish, gruff; inconsiderate, insensitive, tactless, Scot. and North Eng. misleared; abrupt, blunt, brusque, curt, clipped, short; rough, crude, boorish, churlish, loutish, vulgar, coarse.
ill-disposed, adj. 1. antagonistic, opposed, adverse, averse, contrary, oppugnant; anti, against, SI. agin, down on.
2. hostile, antipathetic, unfriendly, unsympathetic, inhospitable, cold, unsociable; belligerent, bellicose, pugnacious; combative, contentious, bickering, quarreling, wrangling, clashing; discordant, fractious, factious.
illegal, adj. unlawful, illegitimate, SI. illegit, lawless, criminal; unconstitutional, illicit, unlicensed, unauthorized, wildcat, unofficial, unsanctioned, unwarranted; contraband, black-market, under-the-counter, under the table; prohibited, banned, outlawed, proscribed, interdicted; forbidden, Fr. defendu, Ger. ver-boten.
illegible, adj. unreadable, indecipherable, undecipherable, unintelligible, clear as mud; hieroglyphic, hieroglyphical, hard to read; scrawled, scrawly, scribbled, SI. scribbly, squiggly.
illegitimate, adj. 1. illegal, unlawful, unconstitutional, illicit. See - illegal.
2. (all of a person) natural, bastard, Fr. batard, unfathered, misbegotten, baseborn, born out of wedlock, adulterine.
3. irregular, nonstandard, informal, slang, slangy; dialectal, regional, colloquial, local, provincial; ungrammatical, incorrect, Linguistics, substandard.
ill-fated, adj. 1. star-crossed, ill-starred, ill-omened, doomed, born under an evil star; unlucky, luckless, unfortunate, hapless; untoward, unfavorable, adverse, contrary, unpropitious, inauspicious; ill-boding, ominous, sinister, threatening, portentous, menacing, minatory.
2. harmful, hurtful, injurious, damaging, destructive, baneful, baleful, pernicious; ruinous, disastrous, calamitous, catastrophic.
ill-favored, adj. 1. ugly, ugly-looking, unsightly, hideous, SI. gross-looking; homely, plain, unpretty, unlovely, uncomely, unbeautiful, Chiefly Literary, un-beauteous, unattractive, undesirable.
2. offensive, objectionable, obnoxious, rude, nasty, unkind; unpleasant, disagreeable, distasteful, disgusting, SI. gross, repulsive, repellent; coarse, crude, offcolor, in bad taste, tasteless.
ill humor, n. bad mood, temper, huff, tiff, miff, pet, fume, pique, Inf stew, Archaic, pucker; rage, passion; touchiness, testiness, thin-skinnedness, fretfulness, petulance; irritability, curtness, tartness, sharpness; ill temper, irascibility, waspishness, peevishness, spleen, bile, choler; crossness, crabbedness, crabbiness, crankiness, grouchiness, grumpiness; moodiness, sulkiness, gloominess, sullenness, moroseness; bitterness, acerbity, asperity, sourness, churlishness, surliness.
ill-humored, adj. 1. irritable, out of sorts, snappish, snappy, huffish, huffy, curt, short, impatient; piqued, in a pique, in a fume, Archaic, in a pucker, Inf in a stew; touchy, testy, thin-skinned, waspish, peevish, petulant; cross, irascible, choleric, ill-tempered, splenetic; crabby, crabbed, cranky, grouchy, grumpy, cantankerous, crotchety, crusty; bitter, acrimonious, acerbic, sour, caustic, tart, churlish, surly; moody, sulky, sullen, dour, gloomy, sullen, morose; hurt, injured, wounded, sore, offended, indignant; angry, irate, in high dudgeon, wrathful, raging, fuming, furious, worked up.