Abinary refers to any gender that is completely unrelated to maleness/masculinity or to femaleness/femininity, and is nowhere inbetween, while not necessarily being agender, although agender people may also identify as abinary. An abinary person may feel a strong sense of gender, however that gender is completely unrelated from the binary genders (male or female). Abinary is another term for unaligned non-binary. Unaligned refers to the fact that some non-binary people are "male-aligned" or "female-aligned" while not being men or women. Unaligned non-binary people are completely separate from these categories.
Some abinary genders include neutrois, maverique, and aporagender. Many xenogenders are abinary.
History
The abinary flag was created by arco-pluris through a submission to the Tumblr blog beyond-mogai-pride-flags on May 18, 2018[1]. The term abinary is combination of the prefix "a" and "binary", to mean "lacking binary".