Where does “जय” come from?

जय (Sanskrit) comes from Sanskrit कर्ता, from Sanskrit कर्तृ, from Sanskrit कृ, from Proto-Indo-European kʷer- — to do; to make; to build.

जय (Sanskrit): conquest, victory, triumph, winning, being...

Definitions

जय traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Sanskrit	कर्ता	nominative singular of कर्तृ
2	Sanskrit	कर्तृ	maker; doer; agent; author one who does, makes, or acts
3	Sanskrit	कृ	to make
4	Proto-Indo-European	kʷer-	to do; to make; to build

Step	Language	Word	Meaning
1	Sanskrit	जि	win, conquer
2	Proto-Indo-European	gʷey-	to win, to conquer; force