undecided

adjective

1. not decided or determined.
2. not having one’s mind firmly made up.

noun

3. a person who is undecided: Are you still among the undecideds?

adjective

1. not having made up one’s mind
2. (of an issue, problem, etc) not agreed or decided upon

adj.1530s, “not decided, unsettled,” from un- (1) “not” + past participle of decide (v.).