Simple past tense and past participle of chaperone.(verb)
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Use "chaperoned" in a sentence
"No student is allowed to talk or otherwise interact with another student of the opposite sex outside of a "chaperoned" area."
"At a meeting scheduled for June 25, the SEC will also propose removing barriers to U.S. investors dealing with foreign broker-dealers, including a requirement that foreign brokers be "chaperoned" by a U.S. broker."
"My previous jaunts to D.C. were quite short and usually "chaperoned", hence I'd never really taken part in the nightlife scene at all."