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The incisive speech got Madeline an 100 as her grade
Incisive is an adjective meaning clever, insightful and perceptive. A good research paper should be incisive, as well as probing and well-organized.
The man was very sharp witted and incisive.
"We are going broke," was the incisive comment from the company treasurer.
"You will never get good grades"
The greater Palatine nerve ascend and branch through the incisive canal.