IPA: /ˌʌnˈsuːpərvaɪzd/
KK: /ʌnˈsuːpərvaɪzd/
Not being watched or controlled by someone; free from supervision.
The children played in the park unsupervised while their parents watched from a distance.
Unspervised → It is formed from "un-" (meaning not) and "supervised" (from Latin "supervisus", meaning to oversee or watch over). The word "unsupervised" means not overseen or not monitored.
Think of 'not' ('un-') being involved in 'overseeing' ('supervised') — that's why unsupervised means not being watched over.