Cisgender (often abbreviated to simply cis) is a term for people whose gender identity matches the sex that they were assigned at birth. Cisgender may also be defined as those who have "a gender identity or perform a gender role society considers appropriate for one's sex". It is the opposite of the term transgender. Related terms include cissexism and cisnormativity.
From Middle English streight, streght, streiȝt, the past participle of strechen (“to stretch”), from Old English streċċan, streccan (past participle ġestreaht, ġestreht), from Proto-Germanic *strakjaną, *strakkijaną (“to stretch”).
straight (comparative straighter, superlative straightest)
straight (comparative more straight, superlative most straight)
straight (plural straights)
straight (third-person singular simple present straights, present participle straighting, simple past and past participle straighted)
From cis- + gender, by analogy with transgender.
cisgender (not comparable)
cisgender (plural cisgenders)