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Definitions

undecided

[uhn-di-sahy-did] / ˌʌn dɪˈsaɪ dɪd /
ADJECTIVE
not sure, not definite
Synonyms
STRONGEST
ambivalent doubtful hesitant uncertain unclear uncommitted undetermined unsure vague wavering
WEAK
betwixt and between blowing hot and cold borderline debatable dithering dubious equivocal hemming and hawing iffy in the middle indecisive indefinite irresolute moot of two minds on the fence open pendent pending running hot and cold tentative torn unfinished unsettled up in the air waffling wishy-washy
Antonyms
STRONGEST
certain clear definite determined resolved secure settled sure
WEAK
decided undoubted

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.

As a result, the fate of 2.7 million voters remains undecided.

From BBC • Apr. 12, 2026

Hours before polls open, many voters are still undecided and unconvinced.

From Barron's • Apr. 12, 2026

Overall, voters of all ethnic backgrounds remained significantly undecided, with 40% unsure who they plan on backing when the polls open June 2.

From Los Angeles Times • Apr. 6, 2026

When asked about the captaincy in recent months, Woods has said he was undecided.

From BBC • Apr. 1, 2026

Sam was quivering, the fine, delicate fear-quivering of a hornet suspended in the air, undecided between fear and hate.

From "The Martian Chronicles" by Ray Bradbury