noun (n)

• a change in the form of a word (usually by adding a suffix) to indicate a change in its grammatical function(noun.linkdef)

  Synonym:
  inflexion
  

  source: wordnet30
• the patterns of stress and intonation in a language(noun.communication)

  Synonym:
  prosody
  

  source: wordnet30
• deviation from a straight or normal course(noun.event)

  Synonym:
  flection, flexion
  

  source: wordnet30
• a manner of speaking in which the loudness or pitch or tone of the voice is modified(noun.communication)

  Synonym:
  modulation
  

  source: wordnet30
• The act of inflecting, or the state of being inflected.(noun)

  source: webster1913