Where does “drīzig” come from?

drīzig (Middle High German) comes from Old High German drīzug, from Proto-Germanic þrīz tigiwiz — thirty.

Ancestry of “drīzig”, step by step

StepLanguageWordMeaning
1Old High Germandrīzug—
2Proto-Germanicþrīz tigiwizthirty
Every word from Proto-Germanic þrīz tigiwiz →Every word from Old High German drīzug →