English Thesaurus

Synonyms of 'doubt'

(noun) 
Definition
uncertainty about the truth, facts, or existence of something
They were troubled and full of doubt.
Synonyms
uncertainty
The magazine ignores all the uncertainties students currently face.
, ,
hesitation
After some hesitation, he answered her question.
, , ,
misgiving
She had some misgivings about what she was about to do.
,
suspense
a writer who holds the suspense throughout her tale
,
indecision
After months of indecision, they gave the go-ahead on Monday.
, ,
lack of confidence
,
hesitancy
A trace of hesitancy showed in Dr Stockton's eyes.
, , ,
lack of conviction
, ,
Opposites
(noun) 
Definition
uncertainty about the truth, facts, or existence of something
Where there is doubt, may we bring faith.
Synonyms
suspicion
Our culture harbours deep suspicions of big-time industry.
,
scepticism
The report has inevitably been greeted with scepticism.
,
distrust
an atmosphere of distrust
,
questioning
,
fear
His fear might be groundless.
,
reservations
,
cynicism
This talk betrays a certain cynicism about free trade.
,
disbelief
She looked at him in disbelief.
,
apprehension
It reflects real anger and apprehension about the future.
,
mistrust
There was mutual mistrust between the two men.
,
misgivings
, ,
qualms
,
incredulity
The announcement has been met with incredulity.
,
lack of faith
,
Opposites
(noun) 
Definition
an unresolved difficulty or point
There is some doubt whether it will be any more effective.
Synonyms
difficulty
The main difficulty has been getting enough students to try out the scheme.
,
problem
the economic problems of the inner city
,
confusion
Omissions in my recent article may have caused some confusion.
, ,
ambiguity (informal)
the ambiguities of language
,
quandary
The anonymous letter creates a quandary for the judge.
,
perplexity
My chief perplexity was how to interpret the words.
(verb) 
They doubted whether that could happen.
Synonyms
be uncertain
, ,
query
No one queried my decision.
,
be sceptical
,
have reservations about
,
be dubious
(verb) 
Stop doubting and start loving.
Synonyms
waver
Some military commanders wavered over whether to support the coup.
,
hesitate
She hesitated, debating whether to answer the phone.
,
vacillate
She is vacillating over whether or not to marry him.
, ,
fluctuate
Body temperatures can fluctuate when you are ill.
,
dither mainly British)
We're still dithering over whether to go away on holiday next week.
,
haver
,
oscillate
The needle indicating volume was oscillating wildly.
,
chop and change
,
blow hot and cold (informal)
I blew hot and cold as I weighed up the pros and cons.
,
keep changing your mind
,
shillyshally (informal)
,
be irresolute or indecisive
,
swither (Scottish)
(verb) 
Definition
to distrust or be suspicious of
I have no reason to doubt his word.
Synonyms
disbelieve
There is no reason to disbelieve his account of the events.
,
question
It never occurs to them to question the doctor's decisions.
, ,
suspect
You don't really think he suspects you, do you?
,
dispute
He disputed the allegations.
, ,
distrust
I don't have any reason to distrust them.
,
mistrust
I mistrust all journalists.
,
cast doubt on
,
have doubts about
,
lack confidence in
,
have misgivings about
,
misgive
Opposites
, , ,
buy (slang)
,
swallow (informal)
,
take on board
,
have faith in

phrases

See in doubt

usage note

In affirmative sentences, whether was in the past the only word considered acceptable for linking the verb doubt to a following clause, for example I doubt whether he will come. Nowadays, doubt if and doubt that are both considered acceptable alternatives to doubt whether. In negative sentences, use that after doubt, for example I don't doubt that he is telling the truth. The old-fashioned form not doubt but that, as in I do not doubt but that he is telling the truth, is now rarely used and sounds very stiff and formal.

Quotations

There lives more faith in honest doubt,
Believe me, than in half the creeds
[Alfred TennysonIn Memoriam A.H.H.]
I show you doubt, to prove that faith exists [Robert BrowningBalaustion's Adventure]If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties [Francis BaconThe Advancement of Learning]Ten thousand difficulties do not make one doubt [Cardinal NewmanApologia pro Vita Sua]Our doubts are traitors
And make us lose the good we oft might win
By fearing to attempt
[William ShakespeareMeasure for Measure]
Doubt of the reality of love ends by making us doubt everything [Henri Frédéric AmielJournal]

Additional synonyms

in the sense of ambiguity
Definition
the possibility of interpreting an expression in more than one way
the ambiguities of language
Synonyms
inconclusiveness,
indefiniteness,
dubiousness,
tergiversation,
indeterminateness,
equivocality,
doubtfulness,
equivocacy
in the sense of apprehension
Definition
anxiety or dread
It reflects real anger and apprehension about the future.
in the sense of blow hot and cold
I blew hot and cold as I weighed up the pros and cons.
Synonyms
be unsure,
be undecided,
hum and haw (British, informal),
shilly-shally,
swither (Scottish, dialect)

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Video: pronunciation of 'doubt'

Source

Thesaurus for doubt from the Collins English Thesaurus
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