adverb (r)

• deeply or completely

  mendalam atau sepenuhnya

  Example:
  Slept soundly through the storm.
  The baby is sleeping soundly.
  

  source: wordnet30
• completely and absolutely (`good' is sometimes used informally for `thoroughly')

  lengkap dan mutlak (` good' kadang tidak formal untuk digunakan` thoroughly')

  Example:
  He was soundly defeated.
  

  Synonym:
  good, thoroughly
  

  source: wordnet30
• In a sound manner.

  dalam suara cara.

  source: webster1913