Where does “cinq” come from?

cinq (Old Northern French) comes from Latin quīnque, from Proto-Italic kʷenkʷe, from Proto-Indo-European pénkʷe — five.

Ancestry of “cinq”, step by step

StepLanguageWordMeaning
1Latinquīnquefive; 5
2Proto-Italickʷenkʷefive
3Proto-Indo-Europeanpénkʷefive

Words derived from “cinq”

Every word from Proto-Indo-European pénkʷe →Every word from Proto-Italic kʷenkʷe →Every word from Latin quīnque →