Synonyms for tasteless
modified
Lacking flavor
unsavory, dull, bland, unseasoned, vapid, savorless, flat, watery, flavorless, unpleasurable, without spice; see also uninteresting.
Antonyms delicious*, seasoned, spicy.
Plain
homely, insipid, trite, commonplace, innocent, unaffected, simple, natural, innocuous, stereotyped, plain, homely, wholesome; see also common 1.
Antonyms unusual*, extraordinary, sophisticated.
Lacking good taste
pretentious, ornate, showy, trivial, artificial, florid, ostentatious, garish, clumsy, makeshift, coarse, uncouth, useless, rude, ugly, unsightly, unlovely, hideous, foolish, stupid, crass, indecent.
Antonyms simple*, effective, handsome.
See tasteless in Webster's New World Roget's A-Z Thesaurus II
adjective
Lacking an appetizing flavor:
bland, flat, flavorless, insipid, unsavory. See tasteLacking style and good taste:
inelegant, unbecoming. (Informal) tacky2. See styleLacking in delicacy or refinement:
barbarian, barbaric, boorish, churlish, coarse, crass, crude, gross, ill-bred, indelicate, philistine, rough, rude, uncivilized, uncouth, uncultivated, uncultured, unpolished, unrefined, vulgar. See courtesy, smooth
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