To be uncertain, disbelieving, or skeptical about
To lack trust or confidence in
A lack of conviction or certainty
Lack of trust
Hesitation arising from uncertainty
To be uncertain
To entertain doubt
beyond a doubt, without doubt
I doubt if she'll go to you.
I doubt that... but you never know.
He's as sweet as he can be and I have no doubt his intentions are honorable.
If you doubt it, you'd better come and see for yourself.
"I doubt he can play a guitar," he said between sips.