Where does “-teyr” come from?

-teyr (Manx) comes from Old Irish -tóir, from Latin -tor, from Proto-Italic -tōr, from Proto-Indo-European -tōr, from Proto-Indo-European -tor-s.

-teyr (Manx): Suffix appended to words to create an agent noun,...

Definitions

Step	Language	Word	Meaning
1	Old Irish	-tóir	—
2	Latin	-tor	-er
3	Proto-Italic	-tōr	Forms agent nouns to verb stems
4	Proto-Indo-European	-tōr	Derives agent nouns from verbs, denoting someone...
5	Proto-Indo-European	-tor-s	—