Tenuigender

Etymology
Tenui is the plural of the Italian word tenue which comes from the Latin word tenuis, meaning soft, feeble, faint.

Definitions

 * A small, delicate, fragile gender. 2016.. - Ezgender Docs, 2021

Coining
This term was coined by Tumblr user entity13 and posted on mogai-archive on 31 July 2014.