Proto-Sino-Tibetan: *so (~-ew, -aw)
Meaning: rancid, rotten
Burmese: sǝwh be incipiently putrid, be stale, rancid.
Kachin: cu2 be stale, rancid (cf. also (H) mǝšu mould, mildew).
Lushai: thu the fluid which comes from a corpse or any decomposing flesh.
Comments: Mikir thu rotten, BG: Garo so rot, decay; Dimasa thau id. Ben. 54; Mat. 182.