Search Result for "goofball": 
Wordnet 3.0

NOUN (2)

1. a man who is a stupid incompetent fool;
[syn: fathead, goof, goofball, bozo, jackass, goose, cuckoo, twat, zany]

2. a person who amuses others by ridiculous behavior;
[syn: clown, buffoon, goof, goofball, merry andrew]



WordNet (r) 3.0 (2006):

goofball
    n 1: a man who is a stupid incompetent fool [syn: fathead,
         goof, goofball, bozo, jackass, goose, cuckoo,
         twat, zany]
    2: a person who amuses others by ridiculous behavior [syn:
       clown, buffoon, goof, goofball, merry andrew]