unsupervised
🇺🇸
/ˌʌnˈsuːpərvaɪzd/
🇬🇧
/ˌʌnˈsuːpəvaɪzd/
Not being monitored or controlled by someone.
It's not safe to leave an unsupervised child near a swimming pool.
在游泳池附近留下一个无人看管的孩子是不安全的。