Groundless
Groundless adjective - Having no basis in reason or fact.
Vain and groundless are semantically related. in baseless topic. In some cases you can use "Vain" instead an adjective "Groundless".
Nearby Words: ground, groundlessness
Vain
Vain adjective - Having too high an opinion of oneself.
Groundless and vain are semantically related. Sometimes you can use "Groundless" instead an adjective "Vain".
Cite this Source
Vain and Groundless. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/groundless/vain
Groundless & Vain. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/groundless/vain>.
Vain or Groundless. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/groundless/vain.
Google Ngram Viewer shows how "groundless" and "vain" have occurred on timeline