Synonyms and related words :
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,