incisive

adjective

1. Quickly proceeding to judgment and forceful in expression; decisive; forthright.“An incisive producer, who expressed vehement disapproval with my pitch upon my first sentence.”
2. Intelligently analytical and concise.
3. Having the quality of incising, cutting, or penetrating, as with a sharp instrument; sharp; acute; sarcastic; biting.
4. Of or relating to the incisors.“the incisive bones, the premaxillaries”