Where does “tonquinês” come from?

tonquinês (Portuguese) comes from Portuguese -ês, from Old Portuguese -és, from Latin -ensis, from Latin arvum, from Latin colō, from Latin quelō, from Proto-Italic kʷelō, from Proto-Indo-European kʷéleti — to turn.

tonquinês (Portuguese): Tonkinese of or relating to Tonkin

Definitions

Tonkinese of or relating to Tonkin

Ancestry of “tonquinês”, step by step

Step	Language	Word	Meaning
1	Portuguese	-ês	-ese
2	Old Portuguese	-és	—
3	Latin	-ensis	Of or from
4	Latin	arvum	field; farm land
5	Latin	colō	to cultivate the land, till, tend, take care of a field or garden
6	Latin	quelō	—
7	Proto-Italic	kʷelō	to inhabit
8	Proto-Indo-European	kʷéleti	—
9	Proto-Indo-European	kʷel-	to turn

Every word from Proto-Indo-European kʷel- →