Proto-Turkic: *süŕ-
Meaning: 1 to strain, filter 2 to swim, float 3 to walk in water
Russian meaning: 1 цедить, фильтровать 2 плавать 3 ходить в воде
Old Turkic: süz- 1 (OUygh.)
Karakhanid: süz- 1 (MK)
Turkish: süz- 1, süzül- 2
Tatar: söz- 1, (dial.) 2
Uzbek: suz- 2
Uighur: süz- 1
Azerbaidzhan: süz- 1, 2
Turkmen: süz- 1
Halaj: sīz- 1
Chuvash: sǝr- 1, "to catch fish by a drag-net"
Tuva: süs- 3
Kirghiz: süz- 1, 2
Kazakh: süz- 1
Noghai: süz- 1
Bashkir: hü̆δ- 1
Balkar: süz- 1
Gagauz: süz- 1
Karaim: süz- 1
Kumyk: süz- 1
Comments: EDT 861, ЭСТЯ 4, 261; 7; VEWT 420 (the root should be distinguished from *sɨŕ- 'to ooze', q. v. sub *ši̯ŭŕu), Лексика 411, Ашм. XI, 311-312, 314, Федотов 2, 44-45. The meanings 'to strain, filter' and 'to swim, float' go back to a common meaning '*to flow' (additionally the semantic development > 'swim' could have been influenced by *jüŕ- 'to swim' q. v. sub *ni̯úŕe). Bulg. > Hung. szűr- 'to ooze', see Gombocz 1912, MNyTESz 3, 812-813.
