The story
- Proto-Indo-European · derived from*h₁ger-“to awake”
- Middle Low German · derived fromkarsch“merry, lively”
- English todayKasch
* As a German surname, variant of Karsch, from Middle Low German karsch (“merry, lively”), a scant attested Germanic word related to Old Norse karskr (“agile, fresh”), derived by Pokorny from Proto-Indo-European *h₁ger- (“to awake”), see also Ancient Greek ἐγείρω (egeírō), Albanian ngre. * As a Lower Sorbian surname, Germanized from Kaš, shortened from Łukaš (see Lukas).
Etymology from Wiktionary, CC BY-SA 4.0.