from German Kunst "art," originally "knowledge, skill" (9c.), abstract noun from the root of kennen "to know," können "know how, be able" (see can (v.)). Appearing in English in various compounds from 1899, never quite nativized.
kulak
kultur
Kulturkampf
kumquat
kung fu
kunst
Kuomintang
Kurd
kurgan
Kuwait
kvass