imbecile; moron; feeble-minded person
Derogatory term for a person of low intelligence; often used as an insult. The variant 低脳者 explicitly links the meaning to 'brain'.
He got angry and called the other person an imbecile.
Please stop treating me like a moron.
Standard kanji spelling.
Variant with irregular kanji usage; 脳 (brain) is used instead of 能 (ability), but the reading and meaning are the same.
Compound of 低能 (low ability/intelligence) + 者 (person). The variant 低脳者 replaces 能 with 脳 (brain), emphasizing the perceived lack of brainpower.