/goohf/ , Slang.
v.i.
1. to blunder; make an error, misjudgment, etc.
2. to waste or kill time; evade work or responsibility (often fol. by off or around ): Exam week is not a time to goof off. We goofed around till train time.
v.t.
3. to spoil or make a mess of (something); botch; bungle (often fol. by up ): You really goofed up the job.
4. goof on , Slang. to tease, ridicule, or mock; make fun of.
n.
5. a foolish or stupid person.
6. a mistake or blunder, esp. one due to carelessness.
7. a source of fun or cause for amusement: We short-sheeted his bunk just for a goof.
[ 1915-20; appar. var. of obs. goff dolt goffe awkward, stupid ]