Where does “h₃erdʰwós” come from?

h₃erdʰwós (Proto-Indo-European) comes from Proto-Indo-European h₃erdʰ-, from Proto-Indo-European -wós — Creates adjectives from verb stems.

Ancestry of “h₃erdʰwós”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	h₃erdʰ-	to increase, grow; upright, high
2	Proto-Indo-European	-wós	Creates adjectives from verb stems

h₃erdʰwós — Etymology, Origin & Word History | Etymology Explorer