Where does “dier” come from?

dier (Middle English) comes from Old English dēor, from Proto-West Germanic deuʀ, from Proto-Germanic deuzą, from Proto-Indo-European dʰewsóm, from Proto-Indo-European dʰéws, from Proto-Indo-European dʰwes- — to breathe; breath; spirit, soul > creature.

Ancestry of “dier”, step by step

StepLanguageWordMeaning
1Old Englishdēoranimal, beast
2Proto-West Germanicdeuʀanimal, beast
3Proto-Germanicdeuząanimal, beast
4Proto-Indo-Europeandʰewsómliving thing
5Proto-Indo-Europeandʰéwsbreath
6Proto-Indo-Europeandʰwes-to breathe; breath; spirit, soul > creature
Every word from Proto-Indo-European dʰwes- →Every word from Proto-Indo-European dʰéws →Every word from Proto-Indo-European dʰewsóm →