completely unnerve
feel unnerved
deeply unnerve
A: Why are you trembling so much?
A：你为什么抖得这么厉害？
B: That loud noise really unnerved me.
B：那个巨大的响声真的吓到我了。
1) 使丧气
2) 使惊慌
3) 使失去定力
1. 使丧气，使惊慌
verb
1. to make someone lose their confidence or courage
Synonym: disconcert, unsettle, dismay