Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Adverb: fastidiously  fa'sti-dee-us-lee
  1. In a fastidious and painstaking manner
    "fastidiously learn the routines of selling";
    - painstakingly
  2. In a fastidious manner
    "he writes extremely musical music, of which the sound is fastidiously calculated and yet agreeably spontaneous and imaginative"