Operative,

Definition of Operative:

1. Part or segment of an agreement, legal instrument, or rule, that imparts meaning (or force or effect) to the whole.

Synonyms of Operative

Bow Street runner, CIA man, FBI, FBI agent, Federal, G-man, Secret Service, Sherlock Holmes, T-man, Accessible, Active, Actor, Agent, Alive, Architect, Armipotent, Artisan, Author, Authoritative, Cloak-and-dagger operative, Cogent, Conductor, Counterintelligence agent, Counterspy, Craftsman, Craftswoman, Creator, Detective, Doer, Double agent, Driver, Dynamic, Effective, Effectual, Efficacious, Efficient, Employable, Employee, Energetic, Engineer, Espionage agent, Executant, Executor, Executrix, Eye, Fabricator, Fed, Forceful, Forcible, Functional, Functionary, Functioning, Go, Gumshoe, Hand, Handler, High-potency, High-powered, High-pressure, High-tension, Hotel detective, House detective, House ■■■■, In force, In power, Inquiry agent, Inside man, Intelligence agent, Investigator, Irresistible, Laborer, Live, Machinist, Maker, Manipulator, Mechanic, Medium, Mighty, Mighty in battle, Military-intelligence man, Mover, Narc, Naval-intelligence man, Operant, Operation, Operational, Operator, Performer, Perpetrator, Pilot, Plainclothesman, Police detective, Potent, Powerful, Practicable, Practical, Practitioner, Prepotent, Prime mover, Private detective, Private eye, Private investigator, Producer, Puissant, Reconnoiterer, Revenuer, Roustabout, Ruling, Runner, Running, Scout, Secret agent, Shamus, Sleuth, Spotter, Spy, Spy-catcher, Steersman, Store detective, Striking, Strong, Subject, Telling, Treasury agent, Undercover man, Usable, Valid, Vigorous, Vital, Worker, Workhand, Working, Workingman, Workman