adverb (r)

• in mental comfort; without stress(adv.all)

  Example:
  He works comfortably on three continents.
  

  source: wordnet30
• in physical comfort(adv.all)

  Example:
  She could have been lying comfortably in bed getting the same relief.
  

  Antonym:
  uncomfortably
  

  source: wordnet30
• in financial comfort(adv.all)

  Example:
  She has been able to live comfortably since her husband died.
  

  Synonym:
  well
  

  source: wordnet30
• In a comfortable or comforting manner.(adverb)

  source: webster1913