adverb (r)

• with good sense or in a reasonable or intelligent manner(adv.all)

  Example:
  Speak more sanely about these affairs.
  

  Synonym:
  reasonably, sensibly
  Antonym:
  unreasonably
  

  source: wordnet30
• in a sane or lucid manner(adv.all)

  Example:
  She is behaving rather sanely these days even though we know she is schizophrenic.
  

  Antonym:
  crazily, dementedly, insanely, madly
  

  source: wordnet30