Isogender

 is a gender modality that refers to when one is not cisgender, but also does not identify as transgender either. Examples of people who may identify as isogender include:
 * A bigender, or otherwise multigender person doesn't feel trans because a significant portion of their gender is the same as their assigned gender.
 * A non-binary 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 non-binary person who is AFAB.
 * A genderless person who does not feel like trans describes them due to their lack of gender.

Etymology

 * "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

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

Flags
The isogender flag was submitted on beyond-mogai-pride-flags at May 20, 2018.

An alternate flag was created and submitted to ask-pride-color-schemes on October 22, 2019 with the color meanings as follows : Blue, purple, and pink represent masc, fem, and those 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).

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