Agegender

"Not to be confused with Agender, Ageregender or Agregender." Agegender is a fluid gender for a gender that changes once a year or when an individual ages up. For example, an individual might be a demigirl at the age of ten, and when they turn eleven, their gender might shift to beegender.

History
The term was coined by The piano cat on the Wiki on October 8, 2021.