INCISIVE

adj. 1 keen, sharp, acute, piercing, perspicacious, perceptive, percipient, penetrating, trenchant, canny, shrewd Shirley offered some incisive observations on the matter 2 sarcastic, biting, mordant, cutting, caustic, sardonic, ironic(al), sharp, acid, tart, acrid, acrimonious, bitter, acerbic, cynical, stinging, critical Your incisive comments are not really appreciated, George