doubt : 指对事物的真、假有怀疑。
- I'm having doubts about his ability to do the job.
- If there's any doubt about the rocket's engines, we ought to cancel the launch.
- The prosecution has to establish his guilt beyond reasonable doubt (US beyond a reasonable) doubt.
- This latest scandal has raised doubts about whether he could win the election.
- I never had any doubt (that) you would win.
- He's the most attractive man in the room, no doubt about that/it.
suspicion : 语气较强，指对某人做某事的目的、意图有怀疑，或认为某人做错事，但无确凿证据而产生怀疑。
- I have a suspicion that he only asked me out because my brother persuaded him to.
- She had a nagging/sneaking suspicion that she might have sent the letter to the wrong address.
distrust : 一般用词，泛指对某人某事不信任而感到怀疑。
- The two groups have existed in a state of mutual distrust for centuries.
- She has a (deep) distrust of the media.
uncertainty : 侧重指对某事或选择等需作决定时的迟疑不决。
- There is considerable uncertainty about the company's future.
- He had an air of uncertainty about him.