ろく

na-adjective, noun

satisfactory; decent; proper

Used with a negative verb to mean 'not satisfactory', 'not decent', or 'not proper'. Often appears as ろくな〜ない or ろくに〜ない.

• 彼かれはろくな仕し事ごとをしない。

  He doesn't do a decent job.

• この町まちにはろくなレストランがない。

  There isn't a single decent restaurant in this town.

• ろくに勉べん強きょうもしないで試し験けんに受うかるわけがない。

  There's no way you'll pass the exam without studying properly.