出典:Wiktionary
From Middle English yern (“willing, eager”), from 古期英語 ġeorn (“eager”), from Proto-West Germanic *gern, from Proto-Germanic *gernaz.
Cognate with Danish gerne (“gladly”), Dutch gaarne (“with pleasure, gladly”), German gern (“willingly, gladly”), Icelandic gjarn (“willing, keen, eager”), Icelandic gjarna (“willingly, readily, gladdly”), Swedish gärna (“willingly, gladly”). See also yearnful and yearnfully.