Synonyms of unappealing

1 Syllable
plain, dull
2 Syllables
banal, ugly, somber, dreary, trite
3 Syllables
disgusting, subfuscous, unbeauteous, insipid, unpleasant
4 Syllables
unalluring, uninviting
5 Syllables
unappetizing, unattractive, unacceptable