Doubtable and Sure

Opposite meaning words

Doubtable adjective - Giving good reason for being doubted, questioned, or challenged.

Usage example: her argument rested entirely upon some highly doubtable logic

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Sure is an antonym for doubtable in topics: questionable, doubtful, at issue.

Nearby Words: doubt, doubtful, doubting, doubted, doubter

Sure adjective - Worthy of one's trust.

Usage example: a sister is a sure friend for life

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Doubtable is an antonym for sure.

Nearby Word: surely

Cite this Source

Sure and Doubtable. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/doubtable/sure

Doubtable & Sure. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/doubtable/sure>.

Sure or Doubtable. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/doubtable/sure.

Google Ngram Viewer shows how "doubtable" and "sure" have occurred on timeline