Where does “βραδινός” come from?

βραδινός (Greek) comes from Greek βράδυ, from Ancient Greek βραδύ, from Ancient Greek βραδύς, from Proto-Indo-European gʷr̥dus.

βραδινός (Greek): of the evening or night

Definitions

Step	Language	Word	Meaning
1	Greek	βράδυ	at night, by night, nightly; evening; night,...
2	Ancient Greek	βραδύ	—
3	Ancient Greek	βραδύς	slow; slow-witted, dull; late, tardy
4	Proto-Indo-European	gʷr̥dus	—