Where does “înăltuț” come from?

înăltuț (Romanian) comes from Romanian înalt, from Vulgar Latin *inaltum, from Latin altus, from Proto-Italic altos, from Proto-Indo-European h₂eltós, from Proto-Indo-European h₂él- — to grow, nourish.

Ancestry of “înăltuț”, step by step

Step	Language	Word	Meaning
1	Romanian	înalt	tall; high
2	Vulgar Latin	*inaltum	—
3	Latin	altus	high, tall; deep; profound
4	Proto-Italic	altos	—
5	Proto-Indo-European	h₂eltós	—
6	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 →