ろ
 
く
 
に

adverb

Usually written with kana alone. With negative verb.
  1. (not) well, (not) properly, (not) enough, (not) sufficiently, (not) satisfactorily, (not) decently.

Variations

Pronunciation Kanji Kana Is Common
 
ろ
 
く
 
に
ろくに ✔
ろく
碌
 
に
碌に ろくに ✔
ろく
陸
 
に
陸に ろくに