royally

/ˈrɔɪəli/
adverb
  1. In a way that is related to or suitable for a king or queen; in a grand or impressive manner.
    • The hotel staff welcomed us royally, as if we were visiting royalty.
    • The guests were treated royally at the palace banquet.
    • She was dressed royally in a long velvet gown and a tiara.
  2. Used informally to mean 'very much' or 'completely,' often in a negative sense.
    • They failed royally at their attempt to surprise her.
    • I messed up royally on that test.
    • He was royally annoyed when his flight was canceled.