The Collaborative International Dictionary of English v.0.48:

Gove \Gove\ (g[=o]v), n. [Also goaf, goof, goff.]
   A mow; a rick for hay. [Obs.] --Tusser.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

goof \goof\ n.
   a stupid fool. [Colloq.]

   Syn: fathead, jackass, goose, cuckoo, zany.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

goof \goof\ v. i.
   to commit a faux pas or fault.

   Syn: sin, commit an offence, blunder, boob.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

goof
    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]
    v 1: commit a faux pas or a fault or make a serious mistake; "I
         blundered during the job interview" [syn: drop the ball,
         sin, blunder, boob, goof]