undecided

From Middle English undecided, equivalent to un- +‎ decided.

undecided (comparative more undecided, superlative most undecided)

1. Open and not yet settled or determined.

   Synonyms: indeterminate, unresolved, unsettled, indecisive

   The question of man's destiny is still undecided.

2. Uncommitted, not having reached a decision.

   Synonyms: ambivalent, irresolute, of two minds, indecisive, unsure

   The result of the election is in doubt because of a large number of undecided voters.

   • 1939, “Undecided”, performed by Ella Fitzgerald, Chick Webb and his Orchestra:

     First, you say, you do
     And then you don't
     And then you say, you will
     And then you won't
     You're undecided now
     So what are you gonna do?
     Now you want to play
     And then it's no
     And when you say, you'll stay
     That's when you go
     You're undecided now
     So what are you gonna do?

undecided (plural undecideds)

1. A voter etc. who has not yet come to a decision.
   • 2008 February 17, Jennifer Finney Boylan, “At the Maine Caucuses, a Tough Nut to Crack”, in New York Times‎:

     The real drama came as these two camps fought for undecideds, who literally found themselves in the middle.

   • 2016, Herb Asher, Polling and the Public: What Every Citizen Should Know:

     […] but that is a highly flawed procedure if the undecideds differ in major ways from the decideds.

undecided

1. simple past and past participle of undecide

• deinduced