mar·vel·lous in AM, use marvelous If you describe someone or something as marvellous, you are emphasizing that they are very good. He certainly is a marvellous actor He looked marvellous. = wonderful + marvellously mar·vel·lous·ly He always painted marvellously. extremely good, enjoyable, impressive etc = wonderful
extraordinarily good; used especially as intensifiers; "a fantastic trip to the Orient"; "the film was fantastic!"; "a howling success"; "a marvelous collection of rare books"; "had a rattling conversation about politics"; "a tremendous achievement"