Dubious and Surefire
Opposite meaning words
Dubious
Dubious adjective - Giving good reason for being doubted, questioned, or challenged.
Surefire
Surefire adjective - Not likely to fail.
Cite this Source
Surefire and Dubious. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/dubious/surefire
Dubious & Surefire. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/dubious/surefire>.
Surefire or Dubious. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/dubious/surefire.
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