疑心

He’s so suspicious he would distrust his own mother.

他这个人疑心太重, 连母亲也不相信。

He was on the fiddle for years and his boss never suspected a thing.

多年来他偷偷摸摸骗了好多钱，而他老板从来没起疑心。

I am very doubtful of that.

我很疑心那件事。

His suspicions were awakened.

他起了疑心。

They suspected an ambush.

他们疑心有埋伏。