Where does “-ts” come from?

-ts (Proto-Indo-European) comes from Proto-Indo-European -ḱos — -y, -ic.

Ancestry of “-ts”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	-ḱos	-y, -ic

Words derived from “-ts”

Every word from Proto-Indo-European -ḱos →

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