cisgender

As adjectives the difference between cisgender and cismasculine

is that cisgender is (lgbt|of a person) identifying with or experiencing a gender the same as one's biological sex or that is affirmed by society, eg being both male-gendered and male-sexed while cismasculine is of or pertaining to male cisgender people or experiences, especially those of male-presenting genderqueer people who were assigned male at birth.

As an adjective cisgender

is identifying with or experiencing a gender the same as one's biological sex or that is affirmed by society, e.g. being both male-gendered and male-sexed.

As a noun cissy is

an alternative spelling of sissy.