Crackbrain
Crackbrain noun - A person judged to be legally or medically insane.
Usage example: once a brilliant dancer, he died a crackbrain in a mental institution
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Synonyms for Crackbrain
Quiz and crackbrain are semantically related. In some cases you can use "Quiz" instead a noun "Crackbrain".
Quiz
Quiz noun - A person of odd or whimsical habits.
Usage example: even by House of Lords standards, the cross-dressing earl was considered quite a quiz
Crackbrain and quiz are semantically related. Sometimes you can use "Crackbrain" instead a noun "Quiz".
Cite this Source
Quiz and Crackbrain. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/crackbrain/quiz
Crackbrain & Quiz. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/crackbrain/quiz>.
Quiz or Crackbrain. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/crackbrain/quiz.
Google Ngram Viewer shows how "crackbrain" and "quiz" have occurred on timeline