低能儿

retarded child / moron / idiot

low / beneath / to lower (one's head) / to let droop / to hang down / to incline

incapable / incompetent / stupid / mentally deficient

surname Neng

can / to be able to / might possibly / ability / (physics) energy

variant of 人[ren2] / "person" radical in Chinese characters (Kangxi radical 10), occurring in 兒, 兀, 兄 etc

child / son

non-syllabic diminutive suffix / retroflex final