Synonyms of unpalatable

2 Syllables
hard-time, vapid, washy, washier, galling, nasty
3 Syllables
tasteless, savorless, unpleasant
4 Syllables
inedible, distasteful, dislikable, disagreeable, unsavory, uninviting, uneatable, milk-and-water
5 Syllables
objectionable, unpleasurable, indigestible, unappetizing