learn + -ed

source: I Watch It For The Plot GIF | Find, Make & Share Gfycat GIFs

(of a person) having much knowledge acquired by study.

学識［教養］のある〈人〉; 博学な

showing, requiring, or characterized by learning; scholarly:

学問の, 学術的な; 学識を必要とする

e.g. an article in a learned journal.

learnedly |ˈlərnədlē| adverb

learnedness |-nidnis| noun

Middle English: from learn, in the sense ‘teach’.