köken: First attested in the Seokbo sangjeol (釋譜詳節 / 석보상절), 1447, as Middle Korean 즐〮기다〮 (Yale: cúlkì-tá). Probably from an older root 즑— (culk-, “happy”) and suffix —기— (-gi-, “-ki-”). See also 즐겁다 (jeulgeopda, “to be enjoyable, pleasant”).
to be accustomed · to be fond of, take pleasure in, delight in, enjoy
köken: Perhaps fom Proto-Indo-Aryan *Hućyati, from Proto-Indo-Iranian *Hučyati, from Proto-Indo-European *h₁uk-yé-ti, from *h₁ewk- (“to be accustomed”), though the LIV marks the inheritance from PIE as uncertain. Regardless, cognate with Lithuanian jùnkti (“to learn”), Old Church Slavonic оучити (učiti), Gothic 𐌱𐌹𐌿𐌷𐍄𐍃 (biūhts, “accustomed to”), Old Armenian ուսանիմ (usanim, “to learn”).