Where does “atto” come from?

atto (Old Dutch) comes from Proto-West Germanic attō, from Proto-Germanic attô, from Proto-Indo-European átta — father.

Ancestry of “atto”, step by step

StepLanguageWordMeaning
1Proto-West Germanicattōfather; forefather
2Proto-Germanicattôfather, dad; forefather
3Proto-Indo-Europeanáttafather

Words derived from “atto”

Every word from Proto-Indo-European átta →Every word from Proto-Germanic attô →Every word from Proto-West Germanic attō →