Groundless and Harebrained

Groundless

Groundless adjective - Having no basis in reason or fact.
Usage example: fears of a strike proved groundless

Harebrained and groundless are semantically related. In some cases you can use "Harebrained" instead an adjective "Groundless".

Nearby Words: ground, groundlessness

Harebrained

Harebrained adjective - Lacking in seriousness or maturity.

Groundless and harebrained are semantically related. Sometimes you can use "Groundless" instead an adjective "Harebrained".
Cite this Source
Harebrained and Groundless. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/groundless/harebrained
Groundless & Harebrained. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/groundless/harebrained>.
Harebrained or Groundless. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/groundless/harebrained.
Google Ngram Viewer shows how "groundless" and "harebrained" have occurred on timeline