Search Result for "whacko": 
Wordnet 3.0

NOUN (1)

1. a person who is regarded as eccentric or mad;
[syn: nutter, wacko, whacko]



WordNet (r) 3.0 (2006):

whacko
    n 1: a person who is regarded as eccentric or mad [syn:
         nutter, wacko, whacko]