Rokudenashiko -which roughly translates as “good-for-nothing girl”

（ろくでなし子…ざっくり訳すと "good-for-nothing girl"）
　先日わいせつ電磁的記録頒布容疑の疑いで逮捕された、ろくでなし子さんのニュースを伝える英文記事（the guardian　※リンク先、性的な表現が含まれます。閲覧注意。)で、「ろくでなし子」という名前の意味が直訳で説明されていた。

• "good-for-nothing" は、まさに「ろくでなし、役に立たない・価値のない人（もの）、能なし」を意味する語（of no use or value／a good-for-nothing person is lazy and useless／A person of little worth or usefulness）。
  • an idle good-for-nothing drunk
  • I like Jane, but I can't stand that lazy good-for-nothing brother of hers.
  • Where's that good-for-nothing son of yours?
  • They’re all good-for-nothing losers.
• 名詞としても使える。
  • Her brother is a lazy good-for-nothing.
  • He's a stupid good-for-nothing.
  • She told him he was a lazy good-for-nothing and should get a job .
• 実は『ハリーポッターと賢者の石（Harry Potter and the Philosopher's Stone）』で、ペチュニアおばさんがハリーの父を描写するシーンでも使われていて、その時一度調べてたけど忘れてた。
  • Mrs Dursley pretended she didn't have a sister, because her sister and her good-for-nothing husband were as unDursleyish as it was possible to be.