hissy

[ his-ee ]
/ ˈhɪs i /

noun, plural his·sies.

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. 2019

British Dictionary definitions for hissy fit

hissy fit
/ (ˈhɪsɪ) /

noun

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