Where does “յետոյ” come from?

յետոյ (Old Armenian) comes from Old Armenian -ոյ, from Proto-Indo-European -ēs, from Proto-Indo-European -ess, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...

յետոյ (Old Armenian): back, backward; behind; after, then, since,...

Definitions

back, backward; behind; after, then, since,...

Ancestry of “յետոյ”, step by step

Step	Language	Word	Meaning
1	Old Armenian	-ոյ	found in few words; the genitive singular case...
2	Proto-Indo-European	-ēs	Primarily forms adjectival bahuvrīhi compounds
3	Proto-Indo-European	-ess	—
4	Proto-Indo-European	-os	Creates action nouns or result nouns from verbs;...

Words derived from “յետոյ”

հետո

Every word from Proto-Indo-European -os →Every word from Old Armenian -ոյ →Every word from Proto-Indo-European -ēs →