English

Adjective

mentalist ‎(comparative more mentalist, superlative most mentalist)

1. Of or relating to mentalism

Noun

mentalist ‎(plural mentalists)

1. A practitioner of mentalism.
2. (slang) An insane person.
   • I'm Alan Partridge (TV series), To Kill a Mocking Alan

     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!

   • 2015, Andrew O'Hagan, The Illuminations, ISBN 9780571273676, page 39:

     In front a staff sergeant with the new Royal Caledonians was gassing about Scullion and the regiment. 'And this major's a total **** mentalist,' he said. 'What's mental about him?' asked the lance corporal beside him.