As nouns the difference between hissy and cissy
is that hissy is a tantrum, a fit while cissy is an alternative spelling of sissy.
As an adjective hissy
is accompanied with hisses.
hissy
English
Adjective
(er)
Accompanied with hisses
Making a hissing sound
Childish or petulant (compare hissy fit)
Derived terms
* hissy fit
* tissy
Noun
(hissies)
(US) A tantrum, a fit cissy
English
Noun
(cissies)
A cissexual or cisgender person.
Antonyms
* (cissexual or cisgender person) tranny