noun: A person or thing that adheres to the utmost importance of gender.

This includes gender essentialism (the belief in innate mental and social differences between men and women) as well as various transgender theories (belief in gender as an innate identity that differs from sex).

A person that discriminates or is prejudice based on gender.

More politically correct than sexist.

genderist means that you are against gender and you don't pick a side when it comes to gender which would

make you have no gender you are a nothing.

Maintaining ideas about gender that are gazzy and outdated.

Someone who looks down on a certain gender (being racist but with genders)

Defining a specific action for a certain gender

TERF slur for trans people and their allies.