Synonyms & Antonyms of not sure
not sure
1. (Adjective) not certain or having doubts
- I'm not sure what to wear today.
Synonyms
unsure
uncertain
not certain
not confident
doubtful
dubious
hesitant
indecisive
unclear
ambivalent
indefinite
not definite
unconfirmed
undecided
up in the air
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