mentalist
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
An insane person.
Register: slang
Examples
Jed Maxwell: See you next week then. We'll have that pint.
Alan Partridge: Yep.
Jed Maxwell: ...go and see my brother.
Alan Partridge: No way, you big spastic! You're a mentalist!
Quoted attestation: 1997, I'm Alan Partridge (TV series), To Kill a Mocking Alan
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “mentalist” mean?
An insane person.
Is “mentalist” formal or informal?
mentalist is generally slang.