Groundless
Groundless adjective - Having no basis in reason or fact.
Suppositional and groundless are semantically related. In some cases you can use "Suppositional" instead an adjective "Groundless".
Nearby Words: ground, groundlessness
Suppositional
Suppositional adjective - Existing only as an assumption or speculation.
Groundless and suppositional are semantically related. Sometimes you can use "Groundless" instead an adjective "Suppositional".
Mutual synonyms
Cite this Source
Suppositional and Groundless. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/groundless/suppositional
Groundless & Suppositional. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/groundless/suppositional>.
Suppositional or Groundless. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/groundless/suppositional.
Google Ngram Viewer shows how "groundless" and "suppositional" have occurred on timeline