IPA: //ʌnˈʃæpəroʊnd//
KK: /ʌnˈʃæpərən/
Describing someone or something that is not accompanied by a guardian or supervisor.
The children were allowed to play outside unchaperoned for the first time.
Unchaperoned → It is formed from "un-" (meaning not) and "chaperon" (from Old French *chaperon*, meaning a hood or covering, which later came to mean a person who supervises or accompanies). The word "unchaperoned" means not accompanied or supervised by a chaperone.
Think of 'not' ('un-') being with someone who 'supervises' ('chaperon') — that's why unchaperoned means not having supervision.