noun (n)

• a feeling of disliking something or what someone is doing(noun.feeling)

  Antonym:
  approval
  

  source: wordnet30
• the expression of disapproval(noun.communication)

  Antonym:
  approval, commendation
  

  source: wordnet30
• an inclination to withhold approval from some person or group(noun.cognition)

  Synonym:
  disfavor, disfavour, dislike
  

  source: wordnet30
• the act of disapproving or condemning(noun.act)

  Antonym:
  approval, approving, blessing
  

  source: wordnet30
• Disapprobation; dislike; censure; adverse judgment.(noun)

  source: webster1913