Where does “proosit” come from?

proosit (Estonian) comes from Latin sit, from Latin sum, from Proto-Italic ezom, from Proto-Indo-European h₁ésmi, from Proto-Indo-European h₁ēs- — to be.

proosit (Estonian): cheers!

Definitions

cheers!

Ancestry of “proosit”, step by step

Step	Language	Word	Meaning
1	Latin	sit	third-person singular present active subjunctive...
2	Latin	sum	to be, exist, have; to be there; to go
3	Proto-Italic	ezom	to be
4	Proto-Indo-European	h₁ésmi	first-person singular present indicative of...
5	Proto-Indo-European	h₁ēs-	to be

Every word from Proto-Indo-European h₁ēs- →Every word from Proto-Indo-European h₁ésmi →Every word from Proto-Italic ezom →