The story
- Proto-Indo-European*pénkʷe
- Proto-Italic*kʷenkʷe
- Latinquīnque
- English todayquin-
From one combining form of Latin quīnque (“five”) (see, for example, quindecim), ultimately from Proto-Indo-European *pénkʷe (“five; hand”).
Words from the same roots
Latinquīnque all →
quinque-quinquefariousquinticlavequintipoint
Proto-Indo-European*pénkʷe all →
fivePentecostquinesarpanchpenta-
Etymology from Wiktionary, CC BY-SA 4.0.