[s08148692]

A simple search of twitter for "cisgender" shows that the word is not banned

[sangnoir]

Searching for it is the only way you can find the word, because tweets containing the word are "reach-limited" (and appropriately labelled to the author, so they are discouraged from using that "slur" ever again).

[vanjajaja1]

worth pointing out that banned and visibility limited in certain scenarios are not the same thing, which might be causing some confusion in this thread.