Synonyms of mischief-making

1 Syllable
prank
2 Syllables
mischief, antics
3 Syllables
poppycock, devilry, foolishness, craziness, absurdness, carrying-on, tommyrot, nonsense, horseplay, lunacy, deviltry, foolery, silliness
4 Syllables
insanity, buffoonery, hanky-panky, inanity, hokey-pokey, ludicrousness, misbehavior, monkeyshine, absurdity, stupidity
5 Syllables
disobedience
7 Syllables
irresponsibility