Surefire and Undecided

Opposite meaning words

Surefire adjective - Not likely to fail.

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Undecided is an antonym for surefire in absolutely certain topic.

Undecided adjective - Not yet settled or decided.

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Surefire is an antonym for undecided.

Nearby Word: undecidedly

Cite this Source

Undecided and Surefire. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/surefire/undecided

Surefire & Undecided. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/surefire/undecided>.

Undecided or Surefire. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/surefire/undecided.

Google Ngram Viewer shows how "surefire" and "undecided" have occurred on timeline