Synonyms for Unsavory:

adj.

all (adjective)
offensive, unsavoury.
disagreeable (adjective)
objectionable.
odorous (adjective)
odoriferous.
offensive (adjective)
disagreeable, crude, unpleasant, objectionable.
tasteless (adjective)
insipid, jejune, banal, bland, flavorless, stale, flat, mild, vapid, weak, plain, milquetoast, tasteless, savorless.

n.

inedible, rancid. taste, deviant, amoral, perverted, sordid, gross.

Other synonyms:

unpalatable
inedible.