Where does “diez” come from?

diez (Chavacano) comes from Spanish diez, from Old Spanish diez, from Latin decem, from Latin -nus, from Proto-Italic -nos, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

diez (Chavacano): ten

Definitions

Ancestry of “diez”, step by step

Step	Language	Word	Meaning
1	Spanish	diez	ten; A
2	Old Spanish	diez	ten
3	Latin	decem	ten; 10
4	Latin	-nus	-an
5	Proto-Italic	-nos	Creates verbal adjectives from verb stems
6	Proto-Indo-European	-nós	Creates verbal adjectives from roots

Every word from Proto-Indo-European -nós →Every word from Latin -nus →Every word from Latin decem →