Where does “*ʔɔːnᴮ¹” come from?

*ʔɔːnᴮ¹ (Proto-Southwestern Tai) comes from Proto-Tai ʔwuːnᴮ — young; soft; young, soft.

Ancestry of “*ʔɔːnᴮ¹”, step by step

Step	Language	Word	Meaning
1	Proto-Tai	ʔwuːnᴮ	young; soft; young, soft