caustic

adj.

[1]	burning , corrosive , destructive , mordant , astringent
[2]	sarcastic , acerb , acerbic , biting , acrimonious , sharp , acrid , bitter , biting , blistering , sulfurous , sardonic , cutting , sulphurous , trenchant , critical , vitriolic , scathing , acid , harsh , pungent , virulent
[3]	erosive , vitriolic