The Oxford Thesaurus An A-Z Dictionary of Synonyms - tasteless adj.

1) in bad or poor taste, garish, gaudy, loud, tawdry, meretricious, cheap, flashy, unrefined, inelegant, unaesthetic; improper, wrong, indecorous, indelicate, uncultivated, uncouth, uncultured, gauche, boorish, maladroit, distasteful, unsavoury, coarse, crude, gross, vulgar, base, low: That is the most tasteless dress I have ever seen. He made a tasteless remark about her table manners. 2) insipid, bland, dull, flat, watery, vapid, flavourless, unsavoury, Colloq wishy-washy: The tea served there is completely tasteless.