1. tasteless
2. bland, flat, flavorless, flavourless, insipid, savorless, savourless, vapid, unsalted, unseasoned, unflavored, unflavoured, nonflavored, nonflavoured, bland, unappetizing, unappetising, unpalatable, tasteless
3. barbaric, brassy, cheap, flash, flashy, garish, gaudy, gimcrack, loud, meretricious, tacky, tatty, tawdry, trashy, Brummagem, camp, campy, indelicate, off-color, off-colour, ostentatious, pretentious, kitsch, inelegant, pretentious, insipid
4. unappetizing, unappetising, inaesthetic
4. unaesthetic