1. A person who is regarded as eccentric or mad
   - nutter [Brit], wacko, basket case, nutbar [N. Amer], nutcake [US], nutjob, whackjob [N. Amer], mentalist [Brit]

1. Slang, expression of enthusiasm
   - wicked

Derived forms: whackos

Type of: dag [Austral, NZ], eccentric, eccentric person, flake, geek, oddball

Encyclopedia: Whacko

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