köken: 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.…
köken: Originally from regular classical adjective 厳し (kibishi, “tight, close, without gaps”), first cited to roughly 830. This earlier form later shifted conjugation patterns, from the so-called "-ku adjective" to the "-shiku adjective" pattern. The two conjugation types appear to have been in broadly free variation, with both forms developing the strict; severe senses in parallel. Historically, while…
stern, poop of a ship · a ship · backside of a person
çekim: çoğul puppēs · tamlayan puppium
köken: Uncertain. Pokorny compares Polish pupa (“bottom, rear”) and Ancient Greek πύματος (púmatos, “the last”), from a common Proto-Indo-European *pu (“turned away”), supposedly from or related to *apó (“away, off”), with uncertainties. (However, Pokorny did not consider that the Greek word could just as well reflect *pó-mn̥tos with Cowgill's law.) More information at Sanskrit पुनर् (púnar). An…