Where does “Āchen” come from?

Āchen (Middle High German) comes from Old High German Āhha, from Proto-Germanic *Ākā, from Latin aqua, from Proto-Italic akʷā, from Proto-Indo-European h₂ekʷeh₂ — water, flowing water.

Ancestry of “Āchen”, step by step

StepLanguageWordMeaning
1Old High GermanĀhha—
2Proto-Germanic*Ākā—
3Latinaquawater
4Proto-Italicakʷāwater
5Proto-Indo-Europeanh₂ekʷeh₂water, flowing water

Words derived from “Āchen”

Every word from Proto-Indo-European h₂ekʷeh₂ →Every word from Proto-Italic akʷā →Every word from Latin aqua →