marvelous (adj.)youdaoicibaDictYouDict[marvelous 词源字典]
c. 1300, "causing wonder," from Old French merveillos "marvelous, wonderful" (Modern French merveilleux), from merveille (see marvel (n.)). Weakened sense of "splendid, very nice" is from 1924. Related: Marvelously.[marvelous etymology, marvelous origin, 英语词源]