に
　
く
　
い

suffix, adjective

Usually written with kana alone. After -masu stem of verb.
  1. difficult to ..., hard to ....

Variations

Pronunciation Kanji Kana Is Common
　
に
　
く
　
い
 にくい ✔
にく
難
　
い
 難い にくい ✔
がた
難
　
い
 難い がたい
にく
悪
　
い
 悪い にくい