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保護者不在のため、子供は一人で学校に行かせました。
Because there was no guardian present, I let my child go to school alone.
The state of a guardian (e.g., parent or legal representative) not being present.
保護者不在の場合、児童館の利用はできません。
If a guardian is absent, children cannot use the community center.
保護者不在証明書が必要です。
A certificate of absence of a guardian is required.
Commonly used in school notices, legal documents, or facility policies to indicate that a child or dependent is unsupervised.
In formal settings (e.g., schools, government offices), use 保護者不在. In casual speech, you might say 親がいない (oya ga inai, 'parents aren’t here').
保護者不在 implies legal or administrative responsibility, while 子供が一人 (kodomo ga hitori, 'child is alone') is neutral.
保護者 (hogosha, guardian) + 不在 (fuzai, absence). The compound emerged in modern Japanese administrative and educational contexts to formalize situations where a dependent is left without supervision.
Used in formal contexts such as schools, daycare centers, or legal procedures. Avoid using in casual conversation unless referring to official documentation.