Someone who is considered
crazy or insane; someone who does not conform to society's norms.
Designating someone 'eccentric' versus 'crazy' depends on how much
money they have. Eccentric behaviour is usually made possible by large amounts of
money.
Being eccentric is slightly more socially acceptable than being crazy.
Person 1: Dude, that guy's
crazy!
Person 2: Are you kidding me? Have you seen his mansion?? Guy's eccentric.
Person 1: Oh, well in that case.
Sir Appleton, as he now wishes to be called, planted a hundred
apple trees which he now protects 24/7 with a full squadron of men dressed as the
Queen's Guards. What an eccentric guy!