Baseless and Sure

Opposite meaning words

Baseless adjective - Having no basis in reason or fact.

Usage example: baseless rumors that the baseball player was using steroids

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Sure is an antonym for baseless.

Nearby Word: baselessness

Sure adjective - Having or showing a mind free from doubt.

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Baseless is an antonym for sure.

Nearby Word: surely

Cite this Source

Sure and Baseless. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/baseless/sure

Baseless & Sure. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/baseless/sure>.

Sure or Baseless. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/baseless/sure.

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