косный

Borrowed from Old Church Slavonic късьнъ (kŭsĭnŭ, “slow, late”), from Proto-Slavic *kъsьnъ. Compare Bulgarian къ́сно (kǎ́sno, “late”), Serbo-Croatian ка̏сно (“late”), Slovene kəsȃn (“careless, slow, late”) (feminine kəsnà), also kəsə̀n. Further cognate with Lithuanian kùšlas (“frail, wretched”) (also kušlùs), Latvian kusls (“weak, small and tender”), Latvian kust (“to tire”) (1sg. kùstu, 1sg. past kusu), Old Prussian ucka-kuslaisin (“the weakest”, acc. sg.).

• IPA^(key): [ˈkosnɨj]

• Audio:

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ко́сный • (kósnyj) (comparative (по)ко́снее or (по)ко́сней)

1. (dated) sedentary, lazy, slow
2. rigid, resistant to change

• ко́сность (kósnostʹ)
• косне́ть impf (kosnétʹ), закосне́ть pf (zakosnétʹ)