monkey business
noun
• mischievous or deceitful behaviour.
• "she wasn't going to have any monkey business where the reputation of her only daughter was concerned"
Similar:
mischief,
misbehaviour,
mischievousness,
devilry,
devilment,
rascality,
tomfoolery,
dishonesty,
trickery,
misconduct,
misdemeanour,
chicanery,
skulduggery,
shenanigans,
funny business,
hanky-panky,
goings-on,
monkey tricks,
carry-on,
carryings-on,
jiggery-pokery,
monkeyshines,
