1. not accompanied or supervised by a chaperone

Examples

• The teenagers were not allowed to attend the dance unchaperoned.
• She felt nervous about her first unchaperoned trip to the city.
• The school policy requires that all field trips be chaperoned, never unchaperoned.
• The young couple’s unchaperoned meeting caused quite a scandal in the 1800s.
• Parents were concerned about letting their children go unchaperoned to the concert.
• The boarding school had strict rules against unchaperoned visits between dormitories.