English to English

noun (n)

• the state of being less than normal (especially with respect to intelligence)

  keadaan menjadi kurang dari normal (terutama dengan hormat kepada intelijen)

  source: wordnet30
• lack of normal development of intellectual capacities

  kurang normal pembangunan intelektual capacities

  Synonym:
  backwardness, mental retardation, retardation, slowness
  

  source: wordnet30