Where does “çinco” come from?

çinco (Old Spanish) comes from Vulgar Latin cinque, from Latin quīnque, from Proto-Italic kʷenkʷe, from Proto-Indo-European pénkʷe — five.

Ancestry of “çinco”, step by step

StepLanguageWordMeaning
1Vulgar Latincinquefive
2Latinquīnquefive; 5
3Proto-Italickʷenkʷefive
4Proto-Indo-Europeanpénkʷefive

Words derived from “çinco”

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