The term 'peeping ___' can be completed with the 3-letter word 'Tom' and the 7-letter word 'peering'. The term 'peeping Tom' is an idiom that refers to someone who secretly watches or spies on others. It originates from a character in a British folktale, who was punished for peeping through a window at Lady Godiva as she rode naked through the streets of Coventry. The term 'peering' means to look intently or searchingly, often with curiosity or suspicion.