Having the quality of incising, cutting, or penetrating, as with a sharp instrument; cutting; hence, sharp; acute; sarcastic; biting. "An incisive, high voice." G. Eliot. And her incisive smile accrediting That treason of false witness in my blush. Mrs. Browning.
Of or pertaining to the incisors; incisor; as, the incisive bones, the premaxillaries.
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