Where does “pepsi” come from?

pepsi (Italian) comes from Ancient Greek πέψις, from Ancient Greek -σῐς, from Ancient Greek -τις, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

pepsi (Italian): digestion

Definitions

digestion

Ancestry of “pepsi”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	πέψις	softening, ripening, or changing by means of...
2	Ancient Greek	-σῐς	"suffix forming nouns"
3	Ancient Greek	-τις	retained after dentals
4	Proto-Indo-European	-tis	Derives abstract/action nouns from verb roots

Every word from Proto-Indo-European -tis →Every word from Ancient Greek -σῐς →Every word from Ancient Greek -τις →