問題児（もんだいじ、mondaiji）
- troublemaker

The Japanese word 問題児, pronounced もんだいじ (mondaiji), directly translates to "problem child" or "troublemaker." It refers to a person, typically a child or student, who consistently causes problems, exhibits disruptive behavior, or struggles to conform to rules and expectations. This can encompass a range of issues, from academic difficulties and defiance to social challenges and emotional outbursts. The term emphasizes the problematic nature of the individual's actions. 問題児 often suggests that the individual's behavior is causing difficulties for others, such as teachers, classmates, parents, or society in general.

⚫︎彼は学校の問題児として知られています。 Translation: He is known as a problem child at school. ⚫︎その少年は、いつも授業を妨害する問題児だ。 Translation: That boy is a problem child who always disrupts the class. ⚫︎彼女の行動は、親にとって大きな問題児です。 Translation: Her behavior is a big problem for her parents.

This word is used to describe individuals whose behavior consistently deviates from acceptable norms or causes significant issues. It's often used in formal settings like schools, and in situations where describing a specific individual who is causing trouble is needed. While direct and descriptive, it can be considered a somewhat negative term, so one should be mindful of the context and who they are speaking to. It is usually used when referring to children and/or students.

問題児 is primarily written with the kanji 問題 (mondai - problem/issue) and 児 (ji - child). ・問題 itself is composed of the kanji 問 (mon - question) and 題 (dai - theme/topic). ・The reading is always もんだいじ in hiragana. There is no other commonly used way to write this. ・There are no variations in the okurigana (suffix hiragana) for this word.

⚫︎不良(furyou): delinquent; bad kid (implies a more serious level of misbehavior). ⚫︎厄介者(yakkaimono): nuisance; troublemaker (a more general term). ⚫︎困った子(komatta ko): troublesome child (more gentle and less judgmental). ⚫︎手に負えない子(te ni oenai ko): unmanageable child.

⚫︎優等生(yuutousei): a good student, a model student. ⚫︎模範生(mohansei): a model student, an exemplary student. ⚫︎良い子(ii ko): a good child. ⚫︎素直な子(sunao na ko): an obedient child.

彼は問題児として扱われていますが、実は才能があるんです。 ・Translation: He is treated as a problem child, but he actually has talent. ・Explanation: This sentence suggests that the individual may have underlying abilities, despite being labeled as a 問題児.

学校は問題児に対する特別な支援プログラムを提供しています。 ・Translation: The school offers a special support program for problem children. ・Explanation: This demonstrates a school's attempt to address the needs of students exhibiting problematic behavior.

The word's etymology is straightforward. 問題, meaning "problem" or "issue," is combined with 児, meaning "child." The combination, therefore, directly reflects the meaning of the word - a child who is a problem. The usage has evolved over time to encompass various forms of disruptive or non-conforming behaviors.