Atrigirl

Atrigirl, atringirl, or atrinagirl, refers to an atrinary girl, this is also abiatrinary.

As the definition of atrinary states, it is referring to any genders that are completely unrelated to maleness, masculinity, femaleness, femininity, neutrois-ness, or neutrality, and is nowhere in between those things, while not necessarily feeling genderless.

The gendered part of themselves is being a girl. Someone who is a atrigirl may feel as if they're a girl while not being related to maleness, masculinity, femaleness, femininity, neutrois-ness, or neutrality, and feels as if they're nowhere in between any of them.

This could be due to feeling a connection to girlhood rather than femaleness, inherently. A atrigirl may feel as if they're a girl while also not being a part of the gender trinary.

The -boy counterpart to this gender is atriboy.

History
The term was coined by Reddit user u/hiitsyaz in August 2021, with no exact date.

Atrigirl was coined due to wanting to show how differently one can experience their gender(s), due to how (stereotypically) femininity is associated with being a girl. This isn't the case though, as one can present however one wants to, regardless of their gender.

Etymology
The multitude of names of this gender are a combination of girl and atrinary, which was coined by the same person.