Where does “thritich” come from?

thritich (Old Frisian) comes from Proto-Germanic þrīz tigiwiz — thirty.

Ancestry of “thritich”, step by step

StepLanguageWordMeaning
1Proto-Germanicþrīz tigiwizthirty

Words derived from “thritich

Every word from Proto-Germanic þrīz tigiwiz
thritich — Etymology, Origin & Word History | Etymology Explorer