Nonpuer or Nonvir refers to someone who is not male, partially male, or male-aligned in any way but still experiences some connection to masculinity in their gender. It can also be described as a gender that is mingender but is not miaspec/male-aligned. Nonpuer can be used as a gender on it own, or it can be used to encompass several genders, such as femil, cenrell, and proxvir.
The feminine equivalent is nonpuella.
Etymology
The tern comes from the latin words "puer", meaning boy, and "non", meaning not.