> A cisgender person (sometimes cissexual, informally abbreviated cis) is one whose gender identity matches their sex assigned at birth. For example, someone who identifies as a woman and was identified as female at birth is a cisgender woman. The word cisgender is the antonym of transgender.
That comment might make sense a decade ago (when it was mostly relegated to academic journals)[1], but it's been in common use (at least in the U.S.) for years.[2]
> A cisgender person (sometimes cissexual, informally abbreviated cis) is one whose gender identity matches their sex assigned at birth. For example, someone who identifies as a woman and was identified as female at birth is a cisgender woman. The word cisgender is the antonym of transgender.