Comments:АПиПЯЯ 275. The Jpn.-Kor. comparison see in Martin 235 (with a somewhat fantastic reconstruction). Actually Korean drops -g- quite regularly, while -r is an obvious suffix; the vowel -u-, however, is a problem (*-a- would be expected), and should be probably explained as a result of contraction (thus *sù'ɨ̀r < *sagV-bVr or the like). Existing TM forms (see ТМС 2,106) are clearly borrowed from Mongolian, see Doerfer MT 39, Rozycki 186. Cf. also Karakh. suɣdɨč 'winter parties, arranged by turns'.