不ふ良りょう

noun which may take the genitive case particle 'no', na-adjective, noun

bad; poor; inferior; defective

Used for quality, condition, performance, or outcomes that are below standard. Often appears in compounds like 不良品 (defective product) or 成績不良 (poor academic performance).

• この製せい品ひんは不ふ良りょう品ひんだったので交こう換かんしてもらった。

  This product was defective, so I had it replaced.

• 彼かれは健けん康こう状じょう態たいが不ふ良りょうで入にゅう院いんした。

  He was hospitalized due to poor health.

noun, noun which may take the genitive case particle 'no', na-adjective

delinquent; hoodlum; hooligan

Refers to a person, especially a young person, who engages in antisocial or criminal behavior. Commonly used in 不良少年 (juvenile delinquent) or 不良グループ (gang of delinquents).

• 彼かれは昔むかし、不ふ良りょうだったが今いまは真面目まじめに働はたらいている。

  He used to be a delinquent, but now he works seriously.

• 夜よるの公こう園えんには不ふ良りょうがたむろしている。

  Delinquents hang around the park at night.