出典:Wiktionary
From Middle English freke (“a bold man, warrior, man, creature”), from 古期英語 freca (“a bold man, warrior, hero”), from Proto-West Germanic [Term?], from Proto-Germanic *frekô (“an active または eagre man, warrior, wolf”), from *frekaz (“active, bold, desirous, greedy”), from Proto-Indo-European *preg- (“to shrug, be quick, twitch, splash, blast”). Akin with Old Norse freki (“greedy または avaricious one, a wolf”), Old High German freh (“eager”), 古期英語 frēcne (“dangerous, daring, courageous, bold”).