碌な (Rokuna) is a Japanese pre-noun adjectival meaning “satisfactory, decent, good, proper”.
Meanings
- pre-noun adjectivalsatisfactory; decent; good; proper; respectablewith neg. sentence
Examples
麻薬に手を出すとろくなことはない。
If you mess with drugs, you're asking for trouble.
Sentences from Tatoeba (CC BY 2.0 FR).