See unsure in Webster's New World Roget's A-Z Thesaurus II
adjective
Not affording certainty:
ambiguous, borderline, chancy, clouded, doubtful, dubious, dubitable, equivocal, inconclusive, indecisive, indeterminate, problematic, problematical, questionable, uncertain, unclear. (Informal) iffy. Idioms: at issue, in doubt, in question. See certain, clearMarked by lack of firm decision or commitment; of questionable outcome:
indefinite, open, uncertain, undecided, undetermined, unresolved, unsettled, vague. Idiom: up in the air. See certainLacking stability:
infirm, insecure, precarious, shaky, tottering, tottery, unstable, unsteady, weak, wobbly. See change, strongExperiencing doubt:
doubtful, dubious, skeptical, uncertain, undecided. Idiom: in doubt. See certain
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