[Brit] A person who is regarded as eccentric or mad - nutter [Brit], wacko, whacko, basket case, nutbar [N. Amer], nutcake [US], nutjob, whackjob [N. Amer]
A practitioner of mentalism
Adjective: mentalist
Of or relating to mentalism - mentalistic
Derived forms: mentalists
Type of: dag [Austral, NZ], eccentric, eccentric person, flake, geek, oddball