undecidedPronunciation: /ʌndɪˈsʌɪdɪd/Translate undecided | into French | into German | into Italian | into Spanish Definition of undecided adjective (of a person) not having made a decision:the jury remained undecided not settled or resolved:the match was still undecided noun a person who has not decided how they are going to vote in an election: 20 per cent of the population describe themselves as undecidedsDerivatives undecidedly adverb undecided in other Oxford dictionaries Definition of undecided in the US English dictionary