Definition of soundly adverb from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈsaʊndli//
    ; NAmE NAmE//ˈsaʊndli//
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  1. 1if you sleep soundly, you sleep very well and very deeply
  2. 2in a way that is sensible or can be relied on Your information is soundly based. a soundly based conclusion
  3. 3completely and thoroughly The team was soundly defeated.
  4. 4strongly; firmly These houses are soundly built.
  5. 5very well, but not in an excellent way He played soundly.
  6. 6(of physical punishment) severely He was soundly beaten by his mother.
See the Oxford Advanced American Dictionary entry: soundly