Synonyms: uncertain, unsure, incertain
Definition: lacking or indicating lack of confidence or assurance
Usage: uncertain of his convictions; unsure of himself and his future; moving with uncertain (or unsure) steps; an uncertain smile; touched the ornaments with uncertain fingers
Similar words: ambivalent
Definition: uncertain or unable to decide about what course to follow
Usage: was ambivalent about having children
Similar words: doubtful, dubious
Definition: fraught with uncertainty or doubt
Usage: they were doubtful that the cord would hold; it was doubtful whether she would be admitted; dubious about agreeing to go
Similar words: groping
Definition: acting with uncertainty or hesitance or lack of confidence
Usage: a groping effort to understand