Where does “góður” come from?

góður (Faroese) comes from Old Norse góðr, from Proto-Germanic *gōdaz, from Proto-Indo-European gʰedʰ- — to join; to unite; to suit.

góður (Faroese): good

Definitions

Step	Language	Word	Meaning
1	Old Norse	góðr	good, righteous, morally commendable; good,...
2	Proto-Germanic	*gōdaz	—
3	Proto-Indo-European	gʰedʰ-	to join; to unite; to suit

góður — Etymology, Origin & Word History | Etymology Explorer