doubtnoun
If he had doubts about the relationship, he never expressed them openly.
He plays a middle-aged priest who has doubts about his vocation.
I had my doubts about going on holiday with my mother-in-law.
He never had any doubt over the abilities of the team's top scorer.
When she talks about the economy turning the corner, I have grave doubts.

SMART Vocabulary: related words and phrases

Suspecting & questioning
ask questions of someone/somethingidiom
challenge
challengingly
cynic
cynical about someone/something
cynically
cynicism
doubt
interrogate
query
reserve
sceptical
scepticism
skeptic
skeptical
skeptically
suspect
suspected
suspiciously
unchallengeable