Not to be confused with Demimasc.
Demimasculine or Demimasculinity is where one's gender feels partly masculine and partly another gender. This other gender can be almost anything other than demifeminine. The masculine part of this gender refers to someone's gender that feels masculine itself, not just any masculine gender. The other part of the gender is any gender that is not binary like non-binary, agender, genderqueer, xenogenders, and etc.
Demimasculine and demimasc share a similar name but are not the same.