Anderselkie is a gender that is both xin, feminine, and outherine. it is part of the Andergender system.
1) They are xin, feminine, and outherine at the same time
2) They are fluid between feminine, xinic, and outherine genders
3) Their gender is feminine, xin, and or outherine but feels like one or more of the other aspects
Keep in mind that these are only examples, and that you can use this label if you want