Demiboy (also known as Demiman, Demimale, Demiguy, Demilad, Demidude, or Demibloke) is a non-binary gender in which one is partially, but not fully, a boy or man. They may or may not identify as another gender in addition to being partially a boy. The other part of one's gender can be any gender or combination of genders, including a lack of gender.
The female-aligned counterpart is demigirl, which describes those who feel partly like a girl but not entirely. There is also a non-binary equivalent called deminonbinary and a neutral equivalent called demineutrois. There are also demiagenders which describe those who feel partly agender and partly another gender (usually a non masc, fem, or neutral gender, eg. partly aporagender).
On August 12, 2010, user Bad Patient of AVEN made a post saying:
"...I said to myself that I can any word relate to me if I just stick a "demi-" in front of it. And then I realised that it might actually help me find a word for my gender identity. I've felt for some time that I may have too much of the masculine element in me to call myself agender and feel good about it — so maybe it would be a nice idea to call myself a demiguy. Demidude. Demibloke..."
This was possibly the first recorded instance of someone using demi- to describe their gender. Though, Bad Patient goes on to say it isn't completely serious.
In December of that year, a different user in that forum, seeking more information, wrote that the only place they could find a description of the term "demigirl" was on the yada wiki. In response, another user claimed that the term was coined there, but no exact dates can be found, and the definition is slightly different to the most common definition used today. The given definition being "...either someone AMAB who feels the barest association with manhood or an non-binary AFAB person who is transmasculine, and feels a vague association with masculinity."
"Demigirl" and "demiguy" were added to the AVEN Gender Definitions Masterlist on December 12, 2010.
By October 14, 2011, "demigirl" and "demiguy" had been added to the Genderqueer Identities & Terminology page of the popular blog Genderqueerid. The blog owner, Marilyn Roxie, had collected data for a survey of genderqueer individuals that year, (September 15 - October 15) and added demiboy and demigirl as options. Nine individuals selected "demiboy," and seven individuals selected "demigirl."
This lead to an increase in awareness of these identities and by early 2014 the prefix demi- was commonly known in relation to genders. At an unknown point between October 2011 and 2014 the common definition of demiboy shifted from the previously stated definition to "someone who is partially a man."
Flag and Symbols
The demiboy flag was created by Tumblr user Transrants on or before July 4, 2015. There are no confirmed color meanings, but it is commonly assumed that the greys represent a partial connection and the grey areas, the blue represents manhood or masculinity, and the white represents agender or non-binary identities.
The demiboy symbol was designed by a group of non-binary Brazilians on October 2, 2014. It is the male/Mars symbol with half of the extending arrow removed.