Where does “*druwáh” come from?

*druwáh (Proto-Iranian) comes from Proto-Indo-Iranian dʰruwás, from Proto-Indo-European dʰru-wó-s, from Proto-Indo-European -wós — Creates adjectives from verb stems.

Ancestry of “*druwáh”, step by step

StepLanguageWordMeaning
1Proto-Indo-Iraniandʰruwásfixed, firm
2Proto-Indo-Europeandʰru-wó-s
3Proto-Indo-European-wósCreates adjectives from verb stems

Words derived from “*druwáh

Every word from Proto-Indo-European -wósEvery word from Proto-Indo-European dʰru-wó-sEvery word from Proto-Indo-Iranian dʰruwás