Headlong and Harebrained

Headlong

Headlong adjective - Acting or done with excessive or careless speed.

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

Harebrained

Harebrained adjective - Lacking in seriousness or maturity.

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