[ 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
Word Origin and History for hissy
Online Etymology Dictionary, © 2010 Douglas Harper