A Demigirl (also called a Demiwoman, Demifemale or a Demilady) is a gender identity describing someone who partially identifies as a woman or girl. In addition to feeling partially like a girl or woman, demigirls also feel partly outside the binary. That can include anything under the non-binary umbrella like agender, genderqueer, or xenogenders for example.
Demifemme is a superset of demigirl. It is for someone who isn't comfortable with having a gendered term like female, woman, girl, etc. in their gender label.
The first known mention of demigirl was on December 11th, 2010, by a user named bristrek87. They asked on the Asexuality Visablity and Education Network about the term demigirl and was looking for information, but could only find a little bit that was from the Yada Wiki.
In response, Am I Human claimed that the people who worked on the wikis for demigenders had been 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 is "...either someone AFAB who feels the barest association with womanhood or an non-binary AMAB person who is transfeminine, and feels a vague association with femininity".
The blog owner, Marilyn Roxie, had collected data for a survey of genderqueer people that year, (September 15th - October 15th) and added demigirl and demiboy as options. Seven people selected "demigirl", and nine people selected "demiboy".
This led to an increase in awareness, and by early 2014, the prefix "demi-" was commonly known in relation to genders. At some point between October 2011 and 2014 the common definition of demigirl shifted from the previously stated definition to "someone who is partially a girl". On October 2nd, 2014, Cari-Rez-Lobo made a symbol for demigirl.
On August 24th 2015, an unknown Tumblr user made an alternative flag. Also in August, transrants made their own alternative flag. Sometime that same year, Rockabilly Punk made an alternative flag too.
July 9th 2016, an unknown DeviantArtist made an alternative flag for demigirl.
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