Open English Wordnet
Adjectives
(s)fantastic, grand, howling, marvelous, marvellous, rattling, terrific, tremendous, wonderful, wondrous, phenomenalextraordinarily good or great; 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”
Adverbs
(r)wonderfully, wondrous, wondrously, superbly, toppingly, marvellously, terrifically, marvelously(used as an intensifier) excellently“her voice is superbly disciplined”, “the colors changed wondrously slowly”