adverb (r)

• as might be expected(adv.all)

  Example:
  Naturally, the lawyer sent us a huge bill.
  

  Synonym:
  course, of course
  Antonym:
  unnaturally
  

  source: wordnet30
• according to nature; by natural means; without artificial help(adv.all)

  Example:
  Naturally grown flowers.
  

  Antonym:
  artificially, by artificial means, unnaturally
  

  source: wordnet30
• through inherent nature(adv.all)

  Example:
  He was naturally lazy.
  

  source: wordnet30
• in a natural or normal manner(adv.all)

  Example:
  Speak naturally and easily.
  

  source: wordnet30
• In a natural manner or way; according to the usual course of things; spontaneously.(adverb)

  source: webster1913