1. Synonyms for Causticity include acridity, mordancy, acridness, corrosiveness, trenchancy, causticness, incisiveness, mordacity, sharpness and acerbity

2. There are many synonyms of Acridity which include Acerbity, Acidity, Acridness, Acrimony, Causticity, Incisiveness, Mordancy, Sharpness, Mordacity, Trenchancy, etc.