From The Collaborative International Dictionary of English v.0.44 [gcide]:
From WordNet (r) 2.0 [wn]:
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
64 Moby Thesaurus words for "acidulous": acerb, acerbate, acerbic, acetic, acetose, acetous, acid, acidic, acidulated, acidulent, acrid, acrimonious, astringent, biting, bitter, burning, caustic, choleric, corroding, corrosive, cutting, double-edged, dry, edged, embittered, escharotic, fierce, harsh, hyperacid, incisive, keen, mordacious, mordant, penetrating, piercing, piquant, poignant, pungent, rancorous, rankled, resentful, resenting, rigorous, rough, scathing, scorching, severe, sharp, sore, splenetic, stabbing, stewing, stinging, strident, stringent, subacid, subacidulous, tart, trenchant, vehement, violent, virulent, vitriolic, withering
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