Where does “-ōþu” come from?

-ōþu (Proto-West Germanic) comes from Proto-Germanic -ōþuz, from Proto-Germanic -þuz, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Ancestry of “-ōþu”, step by step

StepLanguageWordMeaning
1Proto-Germanic-ōþuzForms nouns from weak class 2 verbs, possibly...
2Proto-Germanic-þuzForms result nouns from verb roots, usually from...
3Proto-Indo-European-tusDerives action nouns from verb roots

Words derived from “-ōþu

Every word from Proto-Indo-European -tusEvery word from Proto-Germanic -þuzEvery word from Proto-Germanic -ōþuz