goof (1): a silly and foolish
person.
goof (2): make
a mistake.
goof off (3): waste time.
goof-off (4): someone who wastes time and isn't serious.
goof up (
5): make a mistake.
goofy (6) : silly.
1."What a goof you are!"
2.I really goofed on the
test today."
3."Stop goofing off and help me clean the
house!"
4."A goof-off never does well in school"
5."Oh no! I really goofed up!"
6."
Kids always make me feel goofy!"