English to English

adverb (r)

• to a great depth psychologically(adv.all)

  Example:
  They felt the loss deeply.
  

  Synonym:
  profoundly
  

  source: wordnet30
• to a great depth;far down(adv.all)

  Example:
  Dived deeply.
  

  Synonym:
  deep
  

  source: wordnet30
• At or to a great depth; far below the surface; as, to sink deeply.(adverb)

  source: webster1913