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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.

Having claimed to have knocked on every door in the constituency several times, as Reform UK has, team Burnham's approach is to send their candidate to speak to undecided voters personally, often about local issues.

From BBC • Jun. 11, 2026

The poll said 25% would choose neither or wouldn’t vote, and 15% were undecided.

From Los Angeles Times • Jun. 8, 2026

OpenAI confidentially filed an S-1 with the SEC for an initial public offering, but timing is undecided.

From Barron's • Jun. 8, 2026

“But I am troubled. I am undecided, because of what you have on record on Reddit.”

From The Wall Street Journal • Jun. 6, 2026

Still, the question of my baseball future is undecided.

From "The Freedom Writers Diary" by The Freedom Writers

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