DICT.TW Dictionary Taiwan

 sub·nor·mal·i·ty /ˌsəbnɔrˈmælətɪ/ 名詞
 低常狀態

 subnormality
      n 1: the state of being less than normal (especially with respect
           to intelligence)
      2: lack of normal development of intellectual capacities [syn:
         retardation, mental retardation, backwardness, slowness]