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North German surname, from a short/pet form of a name related to Leute (“people”); compare Leopold.

From Middle English likken, from Old English liccian, from Proto-West Germanic *likkōn, from Proto-Germanic *likkōną (“to lick”), from Proto-Indo-European *leyǵʰ- (“to lick”). Sense evolution towards violence unclear; not paralleled in any other Germanic language. Cognates Cognate with Dutch lekken, likken (“to lick”), German lecken (“to lick”), Vilamovian łaekia, łakia, łȧḱkja (“to lick”), Yiddish לעקן (lekn, “to lick”), French lécher (“to lick”), Friulian lecâ (“to lick”), Italian leccare (“to lick”), Lombard leccà (“to lick”), Norman litchi (“to lick”), Occitan lecar (“to lick”); also Faroese and Icelandic sleikja (“to lick”), Breton leat (“to lick”), Irish and Scottish Gaelic ligh (“to lick”), Welsh llyfu (“to lick”), Latin lingō (“to lick”), Ancient Greek λείχω (leíkhō, “to lick up”), Latvian làizît (“to lick”), Lithuanian laižyti (“to lick”), Bulgarian ли́жа (líža, “to lick”), Czech lízat (“to lick”), Macedonian лиже (liže, “to lick”), Polish lizać (“to lick”), Russian лиза́ть (lizátʹ, “to lick”), Serbo-Croatian ли́зати, lízati (“to lick”), Slovene lizati (“to lick”), Ukrainian лиза́ти (lyzáty, “to lick”), Armenian լիզել (lizel, “to lick”), Central Kurdish لستن (listin, “to lick”), Northern Kurdish alastin, alêstin, alistin, alîstin (“to lick”), Persian لیسیدن (lēsīdan / lisidan, “to lick”), Sanskrit लिह् (lih), रिह् (rih, “to lick; to eat”).

Back-formation from hit a lick, which see. Ultimately from liquor.