Coined in the 1960s by linguist Rolf Dunås, it was inspired by the Finnish gender-neutral pronoun hän .

Determining if a chicken is a hen or a rooster involves observing specific physical and behavioral traits: The Complete Guide to Telling a Rooster from a Hen

It entered widespread use around 2012 following the publication of the children's book Kivi och Monsterhund , which used the word exclusively for its main character.

It is used when a person's gender is unknown, irrelevant, or for individuals who identify as non-binary or genderqueer. 2. Biology and Identification