Isogender

 is a Gender Modality that refers to when one is not Cis, but also does not identify as Trans either.

Some examples of people who may identify as Isogender include:
 * A Bigender, or otherwise Multigender person who doesn't feel Trans because a significant portion of their gender is the same as their assigned gender.
 * A Nonbinary person who does not feel Trans because their gender or gender presentation is similar to their assigned gender as birth. For example, a feminine aligned Nonbinary person who is AFAB.
 * An Agender, or otherwise Genderless person who does not feel like Trans describes them due to their lack of gender.

Etymology
The prefix iso- comes from the word isomer, as Cis and Trans are isomer types.

Definition

 * Isogender (iso): for people who aren’t cis, but don’t identify as trans. - Beyond-MOGAI-Pride-Flags, 2018
 * Isogender is a term that basically means someone who isn’t cisgender or transgender, or doesnt identify with either label - Isogender, 2020

History
Isogender was coined by an Anonymous ask sent to tumblr blog Bigendering on June 9, 2017.

Flags
The Isogender flag was made by Tumblr blog Beyond-MOGAI-Pride-Flags at May 20, 2018.

An alternate flag was created and submitted to Beyond-MOGAI-Pride-Flags on September 1, 2018 by an anonymous user. The blue, purple, and pink represents masc, fem, and people who may be a mix of both. The greyscale gradient represents attachment or intensity of gender, from white (entirely Agender) to dark grey (strong attachment).

Two tweaked Isogender flags were created by Tumblr user Noname-Nonamorous on August 24, 2021 from Beyond-MOGAI-Pride-Flags' design. The flag took the original Isogender flag and adjusted the colors, made to look less bright and easier on the eyes. One of the flag features a disk symbol, coming from how Iso, the shortening of Isogender, is also a disk file type.

Coining
"Anonymous asked: This isn't a question, just me being a nerd, but since I'm bigender (woman and nonbinary) and I'm AFAB, I don't really feel trans because my gender isn't GOING anywhere, at least, that's how I feel, but I'd prefer they/them so I'm not cis exactly, so I now use "iso" to describe myself because it comes from isomer and cis and trans are isomer types. aaaanyway, I hope you're having a good day

"Ooh I love it! (Biology nerd here)

Would iso be a good term for anyone who doesn’t feel either cis or trans, or for anyone who doesn’t feel cis?""

- Kai of Bigendering