ROGET THESAURUS
unsweetened
Unsavoriness
N
unsavoriness, amaritude, acrimony, acridity (bitterness), roughness, acerbity, austerity, gall and wormwood, rue, quassia, aloes, marah, sickener, unsavory, unpalatable,
unsweetened, unsweet, ill-flavored, bitter, bitter as gall, acrid, acrimonious, rough, offensive, repulsive, nasty, sickening, nauseous, loathsome, fulsome, unpleasant.