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hissy

[his-ee]
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noun, plural his·sies.
  1. Slang. a fit of anger; temper tantrum.

Origin of hissy

An Americanism dating back to 1930–35
Also called hissy fit.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for hissy fit

hissy fit

noun
  1. informal a childish temper tantrum
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for hissy fit

hissy

adj.

1905, from hiss + -y (2). Hissy fit is attested by 1983.

Online Etymology Dictionary, © 2010 Douglas Harper