voyeur; Peeping Tom
Derived from a notorious Meiji-era criminal; now a general term for a voyeur, especially one who spies on women.
A voyeur was caught in the park.
彼は出歯亀行為で逮捕された。
He was arrested for voyeurism.
Standard kanji spelling; the reading でばがめ is also possible but less common.
Mixed kanji-kana spelling; sometimes used to clarify the reading.
From the nickname of a Meiji-era criminal known for voyeurism; the kanji 出 (protruding) 歯 (tooth) 亀 (turtle) are ateji and do not reflect the original meaning.