Where does “ngay cả” come from?

ngay cả (Vietnamese) comes from Vietnamese cá, from French quart, from Latin quārtus, from Proto-Indo-European kʷeturtos, from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.

ngay cả (Vietnamese): even; even if

Definitions

even; even if

Ancestry of “ngay cả”, step by step

ngay cả traces back through two separate lines of ancestry.

via Vietnamese cá

Step	Language	Word	Meaning
1	Vietnamese	cá	fish; to bet
2	French	quart	fourth; quarter; shift
3	Latin	quārtus	fourth
4	Proto-Indo-European	kʷeturtos	—
5	Proto-Indo-European	kʷetwóres	four
6	Proto-Indo-European	kʷe-	and

via Vietnamese ngày

Step	Language	Word	Meaning
1	Vietnamese	ngày	day; date; daytime
2	Proto-Vietic	t-ŋarʔ	to snore

Every word from Proto-Indo-European kʷe- →Every word from Proto-Indo-European kʷetwóres →Every word from Proto-Indo-European kʷeturtos →