English
fivesome
From five + -some.
A compound of five + -some
Proto-Indo-European *pénkʷe
Proto-Germanic *fimf
Proto-West Germanic *fimf
Old English fīf
Middle English fyf
English five
Today it means
noun A group of five people or things.
Language periods are conventional ranges, not dates for this word.
Etymograph / fivesome