Where does “Κρήτη” come from?

Κρήτη (Greek) comes from Ancient Greek Κρήτη, from Ancient Greek Κρυς.

Ancestry of “Κρήτη”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Κρήτη	Crete; Krete
2	Ancient Greek	Κρυς	—