hissy /ˈhɪsi/adjective 3noun 1forms 3 adjective3 •Accompanied with hisses. •Making a hissing sound. •Childish or petulant.Midwestern-bred and still wholesome despite his exposure to New York’s hissiest, Sam remains the play’s anchor. — 2016 noun1 •(US) A tantrum, a fit. formshissies · hissier · hissiest
