- GOOF
- Make a boo-boo
- Silly typo, e.g.
- Foul-up
- Blunder
- Make a mistake
- Careless mistake
- Slip up
- Mistake
- Screwup
- Blow it
- Foolish sort
- Silly mistake
- Slip
- Bungle, with "up"
- Bungle
- Foozle
- Error
- Mess up
- Clown
- Err
- Flub
- Blooper
- Blockhead
- Bozo
- Loaf, with "off"
- Idle, with "off"
- Silly error
- Cause for an "Oops!"
- Botch up
- Kill time, with "off"
- Faux pas
- Minor mistake
- Stumble
- Boo-boo
- Make a blunder
- Commit a blooper
- Botch
- Minor misjudgment
- Minor error
- Ninny.
- Stupid one: Slang.
- Make a boner.
- Pull a boner: Slang.
- Foolish one: Slang.
- Make a silly mistake: Slang.
- Zany: Slang.
- Make a ___.
- Boner
- ___ off (loaf)
- Make a ___ (flub or succeed)
- Simp
- Make a ___ (succeed)
- Foolish person
- Clinker
- Muff
- Bobble
- Play around, with "off"
- Anachronism, e.g.
- Typo, e.g.
- Silly billy
- Clown (around)
- Horse (around)
- Bit of silliness
- Clumsy error
- Fumble
- Silly goose
- Jim Carrey often plays one
- Drop the ball
- Makes a ___: succeeds
- Snafu
- Waste time (with "off")
- Make a dumb move
- Transpose two numbers, e.g.
- Ridicule, with "on"
- Amusing act
- Erratum
- Blooper, e.g.
- Careless slip
