Suppositional and Time-tested

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

Time-tested is an antonym for suppositional.

Time-tested

Time-tested adjective - Tested and proved to be reliable.
Show all Definitions
Synonyms for Time-tested

Suppositional is an antonym for time-tested.
Cite this Source
Time-tested and Suppositional. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/suppositional/time-tested
Suppositional & Time-tested. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/suppositional/time-tested>.
Time-tested or Suppositional. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/suppositional/time-tested.