Dictionary

monkey business

noun

: playful tricks or jokes

: illegal or improper activity or behavior

Full Definition of MONKEY BUSINESS

:  shenanigan 2 <didn't try any monkey business when the boss was away>

Examples of MONKEY BUSINESS

  1. Our teacher warned us not to try any monkey business while she was out of the room.
  2. <the new nanny will not tolerate such monkey business from her charges>

First Known Use of MONKEY BUSINESS

1835

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