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A chaperone is a person who accompanies or supervises a person or group to a social occasion, usually with the specific intent of preventing inappropriate social or sexual interactions or banned activities (e.g. drug use or underage drinking).
The word derives figuratively from the French word chaperon (originally from the Late Latin cappa, meaning "cape") which referred to a hood that was worn by men and women generally. A chaperone was part of the costume of the Knights of the Garter when they were in full dress and, probably, since the Knights were court attendants, the word chaperon changed to mean escort. An alternate explanation comes from the sport of falconry, where the word meant the hood placed over the head of a bird of prey to stop its desire to fly.
Traditionally, a chaperone was an older married or widowed woman accompanying a young woman when men would be present. Her presence was a guarantee of the virtue of the young woman in question. The English derivate "duenna" comes from dueña, the Spanish form derived from the Latin domina, i.e., homemaker, mistress and, by extension, educator as well as chaperone. Chaperones for young men were not commonly employed in Western society until the latter half of the 20th century.
Chaperones may be resisted and resented by the young people being supervised. The practice of one-on-one chaperones for social occasions has largely fallen out of use in Western society, though the term is often applied to parents and teachers who supervise school dances and field trips.
In modern-day cinema, theatre and television productions where the cast includes children (and other areas such as sport or modelling) there can be a legal obligation  to have a staff role of chaperone, responsible for their general safety and well-being while away from their parents. Chaperones must be qualified in specialist childcare areas such as paediatric first aid, child protection, and all required reporting and workforce requirements.
The concept of a chaperone is also used in variation. For example, a chaperone might be an expert in a given activity who takes a group and accompanies them during outside activities to provide physical support, advice and emergency attention if necessary. Sometimes the term is applied to people who are essentially tour guides (as were the bear-leaders of the Grand Tour in previous times). In addition, the term is used as a verb similar to "guide" (e.g., "I'll chaperone you around the city and show you all the best places.")
The chaperone is spoofed in the 2006 musical The Drowsy Chaperone.
- Chaperone (clinical), a person whose has a role to witness and safeguard both a patient and a medical practitioner
- Baedeker, a 19th-century German publisher which pioneered the travel guides
- Reproductive rights
- Women and Islam for a discussion of the requirement for an unmarriageable male relative (called a mahram) to accompany women