subnormal，英语单词，主要用作形容词、名词，作形容词时译为“低于正常的；低能的”，作名词时译为“弱智者”。
单词用法
柯林斯英汉双解大词典
subnormal /sʌbˈnɔːməl/
1.ADJ If someone is subnormal, they have less ability or intelligence than a normal person of their age. 低能的 [老式]
短语搭配
subnormal child 低常儿童
mentally subnormal 心智低常
subnormal series 次正规列 ; 次正规序列
educationally subnormal 成绩落后
subnormal operator 次正规算子
severely subnormal 严重低于正常 ; 严重异常
subnormal integra 次法线积分
midly subnormal 稍微不正常
subnormal refraction 半正常折射