a. 敏锐的, 机敏的, 激烈的, 切入的, 锋利的

[医] 切牙的, 切的

Incisive \In*ci"sive\, a. [Cf. F. incisif.]
1. Having the quality of incising, cutting, or penetrating,
as with a sharp instrument; cutting; hence, sharp; acute;
sarcastic; biting; trenchant. ``An incisive, high voice.''
--G. Eliot.

And her incisive smile accrediting
That treason of false witness in my blush. --Mrs.
Browning.

2. (Anat.) Of or pertaining to the incisors; incisor; as, the
incisive bones, the premaxillaries.

3. Clearly and succinctly stated, with penetrating insight
into the issue at hand; as, an incisive comment.
[PJC]