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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.

See Examples For:

In fairness, getting a bead on a primary in which the candidates keep shifting and many voters remain undecided isn’t easy.

From Slate Aug. 12, 2026

But while the current tally looks like 73 in support of Infantino, 124 in opposition to him and 13 undecided, that picture is fluid and is likely to change in the months ahead.

From BBC Aug. 11, 2026

The poll found Talarico garnering 43% of independents to Paxton’s 23%; 29% remain undecided.

From Salon Jul. 29, 2026

Terms of any possible transaction are still undecided.

From The Wall Street Journal Jul. 21, 2026

His shoulders were up to his ears, tense and undecided, but his face was drawn with fatigue.

From "The Red Car to Hollywood" by Jennie Liu

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