Where does “thanh ghi” come from?

thanh ghi (Vietnamese) comes from Vietnamese ghì, from French gris, from Old Occitan gris, from Frankish grīs, from Proto-Germanic grīsaz — grey; terrible; frightening.

thanh ghi (Vietnamese): register

Definitions

Ancestry of “thanh ghi”, step by step

thanh ghi traces back through two separate lines of ancestry.

via Vietnamese ghì

Step	Language	Word	Meaning
1	Vietnamese	ghì	to hold tightly, to tightly embrace
2	French	gris	grey, gray; drunk, tipsy; gray
3	Old Occitan	gris	—
4	Frankish	grīs	grey
5	Proto-Germanic	grīsaz	grey; terrible; frightening

via Vietnamese thành

Step	Language	Word	Meaning
1	Vietnamese	thành	into; to achieve one's goal, to become, to turn...
2	Chinese	青	—
3	Proto-Sino-Tibetan	*sreŋ	to live

Every word from Proto-Germanic grīsaz →Every word from Frankish grīs →Every word from Old Occitan gris →