Crackbrained
Crackbrained adjective - Having or showing a very abnormal or sick state of mind.
Usage example: had the crackbrained idea that he was receiving radio signals from outer space
Odd and crackbrained are semantically related. In some cases you can use "Odd" instead an adjective "Crackbrained".
Odd
Odd adjective - Being one of a pair or set without a corresponding mate.
Crackbrained and odd are semantically related. Sometimes you can use "Crackbrained" instead an adjective "Odd".
Cite this Source
Odd and Crackbrained. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/crackbrained/odd
Crackbrained & Odd. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/crackbrained/odd>.
Odd or Crackbrained. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/crackbrained/odd.
Google Ngram Viewer shows how "crackbrained" and "odd" have occurred on timeline