Agender

[Donald Trump]

Without gender. Often used as an identification for people who do not identify with or conform to any gender.

[Donald Trump]

A person who identifies as agender is one that identifies as neither male nor female. This is in contrast to [cisgender] people, who identify as the sex that is the one that they originally physically were, and [transgender] people, who identify as a specific sex other than the one they physically were, among other identities.
Some agender people have preferences for certain personal pronouns. While most people prefer either he or she, which some agender people prefer or dont mind, others prefer they, it, or a not-well-known attempt at making a new pronoun.
The argument for they, as I understand it, is that it is sometimes already used as a singular word (such as for a person of unknown gender and sex), but others prefer they remain plural. The reasoning for preferring it can be the person rejecting or ignoring the diminutive uses of the word, at least when it is used tastefully. Other times, both of those are found to be insufficient, so additional word choices are found or created.

[Zipporah Schumaker]

Meaning to have no gender.
NOT related to the word asexual.

[Sarah]

Doesnt exist. Only two Genders. The rest are for people who are crazy.

[Zipporah Schumaker]

A group of people who failed biology.

[Justin Bieber]

An adjective describing a male or female who thinks they are special and seeks attention by saying they dont have a gender. OR an adjective describing someone born without a gender in a very rare medical phenomenon.

[Tariq Zaki]

used to describe a person who does not consider that they belong to a particular gender (= sex) :

[Sarah]

Denoting or relating to a person who does not identify themselves as having a particular gender.