Merrymaking is a related term of festivity.
As nouns the difference between merrymaking and festivity
is that merrymaking is joyful festivities, especially as a celebration while festivity is (often|pluralized) a festival or similar celebration.
merrymaking
English
Noun
(en-noun)
joyful festivities, especially as a celebration
Anagrams
*
festivity
English
Noun
(festivities)
(often, pluralized) A festival or similar celebration.
An experience or expression of celebratory feeling, merriment, gaiety.
Antonyms
* infestivity