verb (v)

• make amendments to(verb.communication)

  Example:
  Amend the document.
  

  source: wordnet30
• to make better(verb.change)

  Synonym:
  ameliorate, better, improve, meliorate
  Antonym:
  aggravate, exacerbate, exasperate, worsen
  

  source: wordnet30
• set straight or right(verb.change)

  Synonym:
  rectify, remediate, remedy, repair
  

  source: wordnet30
• To change or modify in any way for the better(verb)

  source: webster1913
• To grow better by rectifying something wrong in manners or morals; to improve.(verb)

  source: webster1913