adverb (r)

• with ease (`easy' is sometimes used informally for `easily')(adv.all)

  Example:
  She was easily excited.
  Was easily confused.
  He won easily.
  This china breaks very easily.
  

  Synonym:
  easy
  

  source: wordnet30
• without question(adv.all)

  Example:
  Easily the best book she's written.
  

  Synonym:
  unimpeachably, unquestionably
  

  source: wordnet30
• indicating high probability; in all likelihood(adv.all)

  Example:
  A mistake that could easily have ended in disaster.
  

  source: wordnet30
• With ease; without difficulty or much effort; as, this task may be easily performed; that event might have been easily foreseen.(adverb)

  source: webster1913