RichThesaurus
for certain
for certain
synonyms
for sure
certainly
sure
surely
sure enough
sure as shooting
definitely
for a fact
no ifs ands or buts
unquestionably
positive
explicitly
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patent
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pat
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scrupulously
irrefutable
real
wholly
unavoidable
literally
perfect
on the nail
fosho
inexorably
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on the money
more synonyms
for certain
antonyms
uncertain
unsure
indefinite
doubtful
preventable
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unlikely
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fortuitous
inaccurately
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mistakable
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doubtul