Synonyms of unsure in English:

unsure


See definition of unsure

adjective

1‘she felt very unsure’

SYNONYMS
unconfident, not confident, lacking confidence, lacking self-confidence, not self-assured, lacking assurance, unassertive
insecure, hesitant, diffident, timid, timorous, anxious, apprehensive, fearful
ANTONYMS

confident, assertive

2‘Sally was unsure whether to be pleased’

SYNONYMS
undecided, irresolute, dithering, equivocating, in two minds, in a dilemma, in a quandary, ambivalent, vague
ANTONYMS

decided

3‘some teachers are unsure about the proposed strike’

SYNONYMS
dubious, doubtful, sceptical, distrustful, suspicious, mistrustful, uncertain, unconvinced
informal iffy
ANTONYMS

happy, convinced

4‘the date is unsure’

SYNONYMS
not fixed, not settled, undecided, indeterminate, uncertain, unknown
ANTONYMS

fixed