Where does “*arm” come from?

*arm (Proto-Germanic) comes from Proto-Germanic armaz, from Proto-Indo-European h₂ermos, from Proto-Indo-European h₂er- — to fit, to fix, to put together.

Ancestry of “*arm”, step by step

StepLanguageWordMeaning
1Proto-Germanicarmazarm; poor, miserable; pitiful, pitiable
2Proto-Indo-Europeanh₂ermos
3Proto-Indo-Europeanh₂er-to fit, to fix, to put together

Words derived from “*arm

Every word from Proto-Indo-European h₂er-Every word from Proto-Indo-European h₂ermosEvery word from Proto-Germanic armaz