Where does “-ոտ” come from?

-ոտ (Old Armenian) comes from Old Armenian հոտ, from Proto-Indo-European h₃ed- — to smell, stink; to hate; to bite.

-ոտ (Old Armenian): forming adjectives

Definitions

Step	Language	Word	Meaning
1	Old Armenian	հոտ	odour, smell, scent; sign, indication
2	Proto-Indo-European	h₃ed-	to smell, stink; to hate; to bite

-ոտ — Etymology, Origin & Word History | Etymology Explorer