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Synonyms

undecided

American  
[uhn-di-sahy-did] / ˌʌn dɪˈsaɪ dɪd /

adjective

  1. not decided or determined.

  2. not having one's mind firmly made up.

    Synonyms:
    irresolute, vacillating, indecisive

noun

  1. a person who is undecided.

    Are you still among the undecideds?
undecided British  
/ ˌʌndɪˈsaɪdɪd /

adjective

  1. not having made up one's mind

  2. (of an issue, problem, etc) not agreed or decided upon

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of undecided

First recorded in 1530–40; un- 1 + decided

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Undecided voters can be targeted precisely in many ways, with TikTok the most au courant example.

From New York Times • Mar. 8, 2024

Undecided voters are warming to Labor, which must add 10 seats to its current tally of 37 to form a majority in the lower house.

From Reuters • Mar. 24, 2023

Undecided voters: 'Who will help us make up our minds?'

From BBC • Dec. 9, 2019

Undecided Democrats like Wendy Ewalt and Diane Schlei will end up settling the issue — at least before the general election.

From Seattle Times • Dec. 3, 2019

Undecided on how to handle Cuba, John Kennedy flew to the Midwest on October 19 and gave a series of campaign speeches.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.