Bittersweetgender

 is a gastrogender that is so sweet that it is unbearable.

Etymology
Although etymology was not specified in the original coining post, it is assumed that the term comes from the root word bittersweet, suffixed with the popular gender suffix -gender.

Pronunciation
To be added.

Definitions

 * a gender that’s a variation of candygender. this gender is so sweet that it’s unbearable. - computerizedmogai, 2020

History
Bittersweetgender was coined on or before August 11th of 2020 by Tumblr user computerizedmogai, with the flag being posted at the same time. Due to the user deactivating their account, the original post has been lost, only existing in the form of reblogs.