Where does “-og” come from?

-og (Swedish) comes from Old Swedish -ogher, from Old Norse -igr, from Proto-Germanic -gaz, from Proto-Indo-European -ḱos — -y, -ic.

Ancestry of “-og”, step by step

StepLanguageWordMeaning
1Old Swedish-ogher—
2Old Norse-igr-y
3Proto-Germanic-gaz-y
4Proto-Indo-European-ḱos-y, -ic

Words derived from “-og”

Every word from Proto-Indo-European -ḱos →Every word from Proto-Germanic -gaz →Every word from Old Norse -igr →