acerbity, acidity, acidness, acidulousness, acridness, acrimony, acuity, acumination, acuteness, asperity, astringence, astringency, bite, bitingness, bitter pill, bitterness, causticity, causticness, corrosiveness, cuttingness, edge, fierceness, gall, gall and wormwood, grip, harshness, incisiveness, keenness, mordacity, mordancy, mucronation, piercingness, piquancy, poignancy, point, pointedness, prickliness, pungency, rigor, roughness, severity, sharpness, sourness, spinosity, stabbingness, sting, stridency, stringency, tartness, teeth, thorniness, trenchancy, vehemence, violence, virulence