noun, adjectival noun or quasi-adjective

  1. low intelligence, low IQ, feeble-mindedness, imbecility.

noun

  1. unintelligent person, person with a low IQ.

Variations

Pronunciation Kanji Kana Is Common
低能 ていのう
低脳 ていのう

Contained Kanji Breakdown

lower, short, humble
テイ ひく.い (4th, N2)
human radical (no. 9)
name of an ancient tribe
テイ タイ シ
family name, surname, clan
シ うじ (4th, N1)
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
ability, talent, skill
ノウ よし の (5th, N3)
a small worm, larvae of mosquitoes, empty
I, myself, katakana mu radical (no. 28)
シ ボウ ム (Kentei 1)
month, moon
つき ゲツ ガツ (1st, N5)
spoon, spoon or katakana hi radical (no. 21)
ヒ さじ (Kentei 1)