Where does “*thum” come from?

*thum (Proto-Kuki-Chin) comes from Proto-Sino-Tibetan *kV-sum — three.

Ancestry of “*thum”, step by step

StepLanguageWordMeaning
1Proto-Sino-Tibetan*kV-sumthree

Words derived from “*thum

Every word from Proto-Sino-Tibetan *kV-sum