“低能”的英语可以翻译为：imbecility，mental deficiency，[医] dysnusia，feeblemindedness，moronism ...

“低能”的反义词：高明。...

他低能得无以复加, 然而却是出于好心.He's hopelessly inefficient , but I suppose he means well.这最多也不过是一批低能的小人物自己干的无聊把戏而已.At worst some egregious minion had conducted a childish private enterprise.他有点低能.He was a bit of buffer....