- 1not having made a decision about someone or something undecided (about somebody/something) I'm still undecided (about) who to vote for. undecided (as to something) He was undecided as to what to do next.
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- 2not having been decided The venue for the annual shareholders' meeting remains undecided. compare decided decide verbdecision noun (≠indecision)decisive adjective (≠indecisive)undecided adjective
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