In*ci"sive (?), a. [Cf. F. incisif.]
Having the quality of incising, cutting, or penetrating, as with a sharp instrument; cutting; hence, sharp; acute; sarcastic; biting.
, high voice."
And her incisive smile accrediting
That treason of false witness in my blush.
Of or pertaining to the incisors; incisor; as, the incisive bones, the premaxillaries.
© Webster 1913.