The crossword solution for the term 'Sleeper, Perhaps' is SPY. A sleeper agent is a SPY who is placed in a target country or organization to act as an informant, but who remains inactive until they are activated by their handler. They are usually placed in the target country for long periods of time, sometimes years, and may even become integrated into the local culture. Sleeper agents are often used to gather intelligence or to carry out sabotage operations.