Where does “u tối” come from?

u tối (Vietnamese) comes from Vietnamese U, from Portuguese u, from Old Portuguese u, from Latin ubi, from Latin cubi, from Latin cubus, from Ancient Greek κύβος — square; cube; die, dice.

u tối (Vietnamese): dark; gloomy

Definitions

dark; gloomy

Ancestry of “u tối”, step by step

u tối traces back through two separate lines of ancestry.

via Vietnamese U

Step	Language	Word	Meaning
1	Vietnamese	U	—
2	Portuguese	u	u; where; Eye dialect spelling of o
3	Old Portuguese	u	where
4	Latin	ubi	where? in what place?, in which place?; "When" or...
5	Latin	cubi	nominative plural of cubus; genitive singular of...
6	Latin	cubus	A mass, quantity; A cube
7	Ancient Greek	κύβος	square; cube; die, dice

via Vietnamese tối

Step	Language	Word	Meaning
1	Vietnamese	tối	dark; the duration from the late evening to the...
2	Vietnamese	tí	breast; a little bit; tiny; small
3	Middle Chinese	子	—
4	Proto-Sino-Tibetan	*tsəʔ	child, son, offspring; grandson; relatives; nephew/niece

Every word from Ancient Greek κύβος →Every word from Latin cubus →Every word from Latin cubi →