(n,vs,adj-no) detective
sleuth
investigator
(P)
(n,vs) scout out
reconnaissance
(P)
(n,vs) spying
investigating
(n,vs) secret investigation
private enquiry
private inquiry
reconnaissance
scouting
(P)
(n,vs) spy
emissary
(n) detective agency
(n) (1) detective team
(2) study group
club
(n) reconnaissance plane
spy plane
(n) scouting party
patrol
(n) great detective
(n) private detective
(n) detective story
(n) reconnaissance satellite
spy satellite
(n) surveillance flight
(n) player put on starting list to be replaced by another when the opponent's pitcher is known
(n) cybersleuth