Proto-Mongolian: *süme-
Meaning: obscure, indistinct, faint, dull
Russian meaning: темный, неясный, бледный
Written Mongolian: sümeg, sümeger, (v.) sümeji- (L 743, 744) Khalkha: sümeg, sümger, sümij-
Monguor: sumoko 'évaporations des hautes montagnes' (SM 359)