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1. [Brit, informal] A person who is regarded as eccentric or mad
   - nutter [Brit, informal], wacko [informal], whacko [informal], nutcake [US, informal], nutjob [informal], wackjob [N. Amer, informal], basket case [informal], whackjob [N. Amer, informal], nutbar [N. Amer, informal], wackadoodle [N. Amer, informal], fruitcake [informal]
    
2. A practitioner of mentalism

1. Of or relating to mentalism
   "This is because one cannot make mentalist attributions without using the core concepts";
   - mentalistic

Derived forms: mentalists

See also: crazy [N. Amer, informal], headcase [informal], looney [informal], loony [informal], lunatic, madman, maniac, nutcase [informal]

Type of: dag [Austral, NZ, informal], eccentric, eccentric person, flake [N. Amer, informal], geek [informal], oddball [informal]

Encyclopedia: Mentalist