Synonyms and related words :
acerbity, acidity, acridity, acrimony, acuteness, arguteness, astringency, bite, bitterness, causticity, creakiness, edge, fierceness, grip, harshness, highness, keenness, mordacity, mordancy, pipingness, poignancy, point, reediness, rigor, roughness, screechiness, severity, sharpness, shrillness, sting, stridence, stridor, stridulousness, stringency, tartness, teeth, trenchancy, vehemence, violence, virulence