偵 - spy

secret investigation; private enquiry; private inquiry; reconnaissance; scouting

scouting; reconnaissance

detective; investigator; sleuth

Detective Conan (manga series and media franchise); Case Closed

player put on starting list to be replaced by another when the opponent's pitcher is known

inept detective

private detective

detective team

detective work; detective industry

reconnaissance satellite; spy satellite

spying out; discovering (by covert investigation)

reconnaissance plane; spy plane