Proto-Altaic: *si̯ā́p`í ( ~ z-)
Meaning: to wither, rot
Russian meaning: вянуть, гнить
Comments: Correspondences are quite regular, and the root seems reliable.
altet-prnum,altet-meaning,altet-rusmean,altet-mong,altet-tung,altet-jap,altet-reference,