adjective
to make sb nervous or frightened 使紧张;使恐惧 SYN unnerve
He was clearly rattled by the question.
这个问题显然令他感到紧张。

verb
to upset or disturb (someone)使不安;使心烦意乱
The question rattled [=unnerved] the speaker.
这个提问使讲话者感到惊慌失措。
— often used as (be) rattled常用作(be) rattled
I was rattled by his questions.
他提的各种问题使我感到不安。
He’s an experienced performer who is not easily rattled.
他是一位有经验的演员,不会轻易感到紧张。

to hit against something repeatedly and make a quick series of short, loud sounds咔嗒咔嗒地响;发出连续短促的声响
The window rattled as the truck drove by.
卡车驶过时窗户咯咯地响。
The coins rattled in the box.
钱币在盒子里叮叮当当地响。