Well, the term 'cis-gender' has made it into the Oxford Dictionary as of 2013 so perhaps it's time to start respecting other people's preferences in the matter.
Cisgender was also added to the Oxford English Dictionary in 2013, defined as "designating a person whose sense of personal identity corresponds to the sex and gender assigned to him or her at birth (in contrast with transgender)."
From Wikipedia
Celebrity Traitors - 2026 - Line Up Revealed



