Unchaperoned (adjective)

Not accompanied by a chaperone or guardian.

Origin:

Late 19th century, from un- + chaperoned.

Examples:

1. The young woman went to the dance unchaperoned, much to her parents' dismay.
2. It was considered scandalous for a lady to travel unchaperoned in the 19th century.
3. The unchaperoned teenagers snuck out of the house to go to a party.
4. The unchaperoned child was caught shoplifting.
5. The unchaperoned couple decided to take a walk in the park.