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headcase

/ˈhɛdˌkeɪs/
noun
1.
(informal) an insane person
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Contemporary definitions for headcase
noun

a mentally unstable person who acts irrationally or foolishly; an eccentric person

Usage Note

informal

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Slang definitions & phrases for headcase

headcase

noun

An insane or very eccentric person; nut: dedication to a cause that marked them as fanatics of a sort, the wealthy headcases, and professional haters (1970s+)


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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