doubt
n
1 uncertainty about the truth, fact, or existence of something (esp. in the phrases in doubt, without doubt, beyond a shadow of doubt, etc.)
2 often pl lack of belief in or conviction about something
all his doubts about the project disappeared
3 an unresolved difficulty, point, etc.
4 (Philosophy) the methodical device, esp. in the philosophy of Descartes, of identifying certain knowledge as the residue after rejecting any proposition which might, however improbably, be false
6 ♦
give (someone) the benefit of the doubt to presume (someone suspected of guilt) innocent; judge leniently
7 ♦
no doubt almost certainly
vb
8 tr; may take a clause as object to be inclined to disbelieve
I doubt we are late
9 tr to distrust or be suspicious of
he doubted their motives
10 intr to feel uncertainty or be undecided
11 tr; may take a clause as object (Scot) to be inclined to believe
13 ♦
I wouldn't doubt (someone) (Irish) I would expect nothing else from (someone)
(C13: from Old French douter, from Latin dubitare)
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doubtable adj
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doubtably adv
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doubter n
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doubtingly adv
Where a clause follows doubt in a positive sentence, it was formerly considered correct to use whether: (I doubt whether he will come ), but now if and that are also acceptable. In negative statements, doubt is followed by that: I do not doubt that he is telling the truth. In such sentences, but (I do not doubt but that he is telling the truth) is redundant