Concrete and Suppositional

Concrete

Concrete adjective - Existing in fact and not merely as a possibility.
Usage example: concrete evidence, and not just a theory, must be presented at a trial

Suppositional is an antonym for concrete.

Suppositional

Suppositional adjective - Existing only as an assumption or speculation.
Usage example: concepts regarding the origin and structure of the universe must perforce be suppositional

Concrete is an antonym for suppositional.

Cite this Source
Suppositional and Concrete. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/concrete/suppositional
Concrete & Suppositional. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/concrete/suppositional>.
Suppositional or Concrete. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/concrete/suppositional.
Google Ngram Viewer shows how "concrete" and "suppositional" have occurred on timeline