Phosdecayial

 is a gender in the Phosial System that may feel as if it is in, or lit by a light that is dying, decaying, or about to go out. It may also be used with other gendered suffixes or subtypes.

Etymology
The term is prefixed by the word "phos", indicating that is it in the Phosial System, followed by the word "decay", and the suffix "-ial".

Definitions

 *  a gender that is in a light that is dying, decaying, or about to go out. - Epikulupu, 2022

History
Phosdecayial was coined on the Tumblr blog Epikulupu on February 1st, 2022.