Frivolity is a related term of tomfoolery.
As nouns the difference between frivolity and tomfoolery
is that frivolity is frivolous act while tomfoolery is foolish behaviour.
frivolity
English
Noun
(frivolities)
frivolous act
state of being frivolous
Related terms
* frivolous
tomfoolery
English
Noun
Foolish behaviour
(Cockney rhyming slang) jewellery.