Where does “fiæþer” come from?

fiæþer (Old Swedish) comes from Old Norse fjǫðr, from Proto-Germanic feþrō, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

Ancestry of “fiæþer”, step by step

StepLanguageWordMeaning
1Old Norsefjǫðrfeather
2Proto-Germanicfeþrōfeather
3Proto-Indo-Europeanpéth₂r̥wing; feather
4Proto-Indo-Europeanpeth₂-to spread out; to fly
Every word from Proto-Indo-European peth₂- →Every word from Proto-Indo-European péth₂r̥ →Every word from Proto-Germanic feþrō →