adjectival noun or quasi-adjective, noun

  1. injustice, impropriety, unreasonableness, undeserved, unfair, invalid.

Variations

Pronunciation Kanji Kana Is Common
不当 ふとう

Contained Kanji Breakdown

negative, non-, bad
 (4th, N4)
cliff (厂) variant
divining, fortune-telling, divination or katakana to radical (no. 25)
ボク うらな.う うらない (Kentei Pre-1)
hit, right, appropriate
トウ あ.たる まさ.に (2nd, N3)
snout, hand