well-done (adj.)youdaoicibaDictYouDict[well-done 词源字典]
c. 1200, "wise, prudent," from well (adv.) + done. Meaning "thoroughly cooked," in reference to meat, is attested from 1747. Well done! as an exclamation of approval is recorded from mid-15c.[well-done etymology, well-done origin, 英语词源]