1. [Adjective]: being in force or having or exerting force; "operative regulations"; "the major tendencies operative in the American political system"

2. [Adjective]: relating to or requiring or amenable to treatment by surgery especially as opposed to medicine; "a surgical appendix"; "a surgical procedure"; "operative dentistry"

3. [Adjective]: of or relating to a surgical operation; "operative surgery"

4. [Noun]: someone who can be employed as a detective to collect information

5. [Noun]: a person secretly employed in espionage for a government

6. effective; producing a desired effect; "the operative word"

7. (of e.g. a machine) performing or capable of performing; "in running (or working) order"; "a functional set of brakes"

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