1620s, "to destroy the strength of," from un- (2) "reverse, opposite of" + nerve (v.). Meaning "to deprive of courage" is recorded from 1704. Related: Unnerved; unnerving.
实用例句
1. He hoped to unnerve Kennedy and force him into concessions.
他只希望动摇肯尼迪的信念,迫使他让步.来自《简明英汉词典》
2. Hitler turned and peered closely at his aide - de - camp . Those beady eyes never failed to unnerve Puttkamer.