Genderneutral (or gender neutral) is a nonbinary gender identity similar to agender and neutrois.
It's defined as a gender that is neutral and/or a gender that is in the middle between man and woman.
Some genderneutral people may also identity as agender, while others do not, because they feel it's important to acknowledge that they have a gender, it is simply neutral. (note: some agender people do define their gender as neutral instead of non-existent).