operative

[1]	worker , secret agent , intelligence officer , hand , employee , intelligence agent , craftsman , craftswoman , artisan , mechanic , machinist
[2]	private detective , private detective , PI , (private) investigator , (Colloq) private eye , private eye , private investigator , sleuth , (Brit) sleuth-hound , shamus , sherlock , (US) P.I , gumshoe , (Slang) (private) dick , (US) shamus , eye
[3]	espionage/intelligence agent , counter-espionage/counter-intelligence agent , spy , counter-spy , undercover agent/man , (FBI/CIA) agent , (US) G-man , (Colloq) (US) company man , member of the firm

adj.

[1]	surgical
[2]	running , functional , working