comfortably (adv.)youdaoicibaDictYouDict[comfortably 词源字典]
late 14c., "pleasantly, enjoyably," from comfortable + -ly (2). Meaning "in a state of comfort" is 1630s.[comfortably etymology, comfortably origin, 英语词源]
enjoyable (adj.)youdaoicibaDictYouDict
1640s, "capable of being enjoyed," from enjoy + -able. Meaning "affording pleasure" is from 1744. Related: Enjoyably; enjoyableness.