Kymenian

Kymenian, also known as Genderstatic or Genderstill refers to a gender or genders that are consistent, always present, and unchanging. It is the opposite of genderfluid. A kymenian person may still be genderflux, as their gender remains the same, the only thing changing is the intensity of that gender. It can be used as an umbrella term for any non-fluid gender. It can also be used as a suffix to denote multigender people constantly experience all their genders and aren't fluid between their genders. For example: pangender static, bigender still, or kymenian trigender.

The orientation equivalent is kymenic.