Etymology

From Middle High German atte, from Old High German atto, from Proto-Germanic *attô, from Proto-Indo-European *átta. Cognate with Latin atta ‎(“father”). The word was probably originally only a vocative, but was extended with a full paradigm in most descendants, including Germanic where it was reformed as a masculine n-stem.

Pronunciation

• (Swiss) IPA^(key): /ˈætti/