Doubt

Synonyms for doubt
noun lack of faith, conviction; questioning

hesitation
disbelief
apprehension
confusion
uncertainty
reluctance
mistrust
misgiving
difficulty
distrust

suspicion
ambiguity
qualm
suspense
skepticism
fear
problem
vacillation
hesitancy
dilemma

incredulity
diffidence
quandary
disquiet
indecision
incertitude
faithlessness
discredit
rejection
wavering

irresolution
perplexity
dubiety
dubiousness
scruple
demurral
faltering
agnosticism
lack of confidence

Antonyms for doubt

calmness
clarity
calm
knowledge
dependence

reliance
certainty
sureness
belief
trust

ease
definiteness
confidence
faith
solution

Synonyms
verb lack confidence in; question

hesitate
distrust
suspect
impugn
vacillate
demur
challenge
mistrust
discredit
disbelieve

insinuate
waver
imagine
query
fear
dispute
fluctuate
scruple
surmise
shilly-shally

misdoubt
misgive
be apprehensive of
be curious
be dubious
be in a quandary
be puzzled
be uncertain
be undetermined
call in question

give no credence
harbor suspicion
have qualms
not buy
read differently
skepticize
smell a rat
take dim view of
wonder at

Antonyms

remain
rely
trust
stay

agree
go along
answer
believe

be certain
not question

Usage Notes

Doubt and doubtful may be followed by a subordinate clause beginning with that, whether, or if: I doubt that (or whether or if) the story is true. It is doubtful that (or whether or if) the story is true. There is some doubt that (or whether or if) the story is true. In negative or interrogative sentences, that almost always introduces the subordinate clause: I do not doubt that the story is true. Is it doubtful that the story is true? Is there any doubt that the story is true? The expressions doubt but and doubt but that occur in all varieties of standard speech and writing: I don’t doubt but she is sincere. There is no doubt but that the charges will affect his career. Doubt but what occurs mainly in informal speech and writing: There is no doubt but what the rainy weather will hurt the crops.
Other adjectives related to doubt

abroad
ancipitous
at a nonplus
casual
contingent on
dependent on
distraught
dubious
experimental
fine-spun
illusive
in a state of uncertainty
incredible
indeterminate
minimifidian
open to discussion
out of one’s reckoning
pettifogging
problematical
shy of
specious
suspicious
unauthentic
uncertain
undefinable
undeserving of belief
untold

adrift
apocryphal
at fault
changeable
controvertible
dependent on circumstances
distrustful of
enigmatic
fallacious
hard to believe
illusory
in question
incredulous as to
jesuitical
mystic
open to doubt
overrefined
plausible
puzzled
skeptical as to
staggering
suspicious of
unauthenticated
unconfirmed
undefined
undetermined
untrustworthy

afraid to say
astray
at one’s wit’s end
confused
debatable
disputable
doubtful
equivocal
fallible
hypothetical
in a cloud
in suspense
indecisive
lost
not to be believed
open to suspicion
paradoxical
plausive
questionable
slippery
subject to
ticklish
unauthoritative
uncounted
undemonstrable
unreliable
unworthy of belief

ambiguous
at a loss
at sea
contingent
deceptive
distracted
doubting
evasive
false
ignorant
in a maze
inconceivable
indefinite
mebby-scales
occasional
oracular
perplexing
precarious
quibbling
sophistical
suspect
unascertained
unbelieving
undecided
undemonstrated
unsettled
vague

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