From Pluralpedia, the collaborative plurality dictionary
middle (n.)
Synonymssysteen (n.)
Applies toheadmates

A middle is a headmate that behaves or otherwise feels like they are teen-age, often capping at age 17. Tweens may also be included in this.

Related Terms[edit | edit source]

Big and little are other common age indicators.

Age sliding is when a headmate varies in how old they feel, often going back and forth between adult and little, but can be any ages.