|Origin:||douter, from Latin dubitare|
doubt2 S2 [transitive not in progressive]
to think that something may not be true or that it is unlikely:
Kim never doubted his story.
I doubt we'll ever see him again.
You can complain, but I doubt if it'll make any difference.
'Do you think there'll be any tickets left?' ' I doubt it (=I don't think so).'
to not trust or have confidence in someone:
I never doubted myself. I always knew I could play tennis at this level.
She loved him, and had never doubted him.
I have no reason to doubt his word (=think that he is lying).
—doubter noun [countable]