headcanon
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
Elements and interpretations of a fictional universe accepted by an individual or small group of fans, but not necessarily found within or supported by the official canon.
Register: slang
Where it’s used:
Used
American English
Examples
In my own headcanon of Rocky IV, Ivan Drago is a Russian Mafia enforcer instead of a Red Army Captain.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “headcanon” mean?
Elements and interpretations of a fictional universe accepted by an individual or small group of fans, but not necessarily found within or supported by the official canon.
Is “headcanon” formal or informal?
headcanon is generally slang.