Proto-Turkic: *op-ra-
Meaning: to wear out (intr.), decay
Russian meaning: изнашиваться, стареть
Old Turkic: apra- 1 (OUygh. ?)
Karakhanid: opra- 1 (MK, KB) Middle Turkic: opra-/opran-, ofra-/ofran 1 (Sangl.) turcet-prnum,turcet-meaning,turcet-rusmean,turcet-atu,turcet-krh,turcet-chg,turcet-reference,