hissy

[ his-ee ]
/ ˈhɪs i /

noun, plural his·sies.

Slang. a fit of anger; temper tantrum.
Also called hissy fit.

Origin of hissy

An Americanism dating back to 1930–35

British Dictionary definitions for hissy fit

hissy fit
/ (ˈhɪsɪ) /

noun

informal a childish temper tantrum