noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   One of the personalities, identities, or selves in a person with dissociative identity disorder or another form of multiplicity.

   "The first one of the headmates (our word for alter) I was aware of was a boy named Josh."

Synonyms

All synonyms

altersystemmate

Example

More examples

"The first one of the headmates (our word for alter) I was aware of was a boy named Josh."

Etymology

From head + -mate. See head (“mind, thoughts”).

Related phrases

dissociative identity disorder

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.