Where does “exalter” come from?

exalter (Old French) comes from Latin exaltō, from Latin altus, from Proto-Italic altos, from Proto-Indo-European h₂eltós, from Proto-Indo-European h₂él- — to grow, nourish.

Ancestry of “exalter”, step by step

Step	Language	Word	Meaning
1	Latin	exaltō	to exalt or elevate
2	Latin	altus	high, tall; deep; profound
3	Proto-Italic	altos	—
4	Proto-Indo-European	h₂eltós	—
5	Proto-Indo-European	h₂él-	to grow, nourish

Every word from Proto-Indo-European h₂él- →Every word from Proto-Indo-European h₂eltós →Every word from Proto-Italic altos →