Harebrained and Thoughtful
Opposite meaning words
Harebrained
Harebrained adjective - Lacking in seriousness or maturity.
Usage example: the movie follows the harebrained antics of a pair of stoners who seem incapable of growing up
Thoughtful
Thoughtful adjective - Given to or marked by long, quiet thinking.
Usage example: was a quiet and thoughtful child who rarely spoke but when he did, he almost always had something worthwhile to say
Harebrained is an antonym for thoughtful.
Cite this Source
Thoughtful and Harebrained. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/harebrained/thoughtful
Harebrained & Thoughtful. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/harebrained/thoughtful>.
Thoughtful or Harebrained. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/harebrained/thoughtful.
Google Ngram Viewer shows how "harebrained" and "thoughtful" have occurred on timeline