Where does “-itha” come from?

-itha (Old Dutch) comes from Proto-West Germanic -iþu, from Proto-Germanic -iþō, from Proto-Indo-European -iteh₂ — -th.

Ancestry of “-itha”, step by step

StepLanguageWordMeaning
1Proto-West Germanic-iþuForms abstract nouns from verbs, adjectives or...
2Proto-Germanic-iþō-ness, -th
3Proto-Indo-European-iteh₂-th

Words derived from “-itha”

Every word from Proto-Indo-European -iteh₂ →Every word from Proto-Germanic -iþō →Every word from Proto-West Germanic -iþu →