English Thesaurus

Synonyms of 'certainly'

(adverb) 
Definition
without doubt
I'll certainly do all I can to help.
Synonyms
definitely
Something should definitely be done about him.
,
surely
She knew that with enough dedication and work she would surely pass the course.
,
truly
I truly never minded caring for him.
,
absolutely
`It's worrying, isn't it?' `Absolutely.'
,
undoubtedly
He is undoubtedly a great player
,
positively
This is positively the worst thing I can imagine.
,
decidedly
He was decidedly uncomfortable at what he saw.
,
without doubt
,
unquestionably
,
undeniably
,
without question
He was our greatest storyteller, without question.
,
unequivocally
,
indisputably
,
assuredly
,
indubitably
,
doubtlessly
,
come hell or high water
,
irrefutably

Additional synonyms

in the sense of absolutely
`It's worrying, isn't it?' `Absolutely.'
Synonyms
genuinely,
decisively,
without doubt,
unquestionably,
undeniably,
categorically,
unequivocally,
conclusively,
unambiguously,
beyond any doubt,
infallibly
in the sense of decidedly
He was decidedly uncomfortable at what he saw.
Synonyms
decisively,
unequivocally,
unmistakably
in the sense of positively
This is positively the worst thing I can imagine.
Synonyms
unquestionably,
undeniably,
categorically,
unequivocally,
unmistakably,
with certainty,
assuredly,
without qualification

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Video: pronunciation of 'certainly'

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Thesaurus for certainly from the Collins English Thesaurus
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