D defs.my
Entry 1 sense Webster, 1913

Fantastically

/făn-tăs'-tĭk-lē/ · Fan·tas·tic·al·ly · IPA /fæntˈæstɪkliː/
01 adv. In a fantastic manner.
  1. 1.
    In a fantastic manner.
    “the letter A, in scarlet, fantastically embroidered with gold thread, upon her bosom.” Hawthorne.