Synonym: PI, functional, intelligence agent, intelligence officer, key, private detective, private eye, private investigator, running, secret agent, shamus, sherlock, surgical, working. Similar words: cooperative, post-operative, postoperative, cooperativeness, imperative, vituperative, degenerative, operation. Meaning: ['ɑpərətɪv /'ɒp-] 
n. 1. a person secretly employed in espionage for a government 2. someone who can be employed as a detective to collect information. adj. 1. being in force or having or exerting force 2. of or relating to a surgical operation 3. relating to or requiring or amenable to treatment by surgery especially as opposed to medicine 4. effective; producing a desired effect 5. (of e.g. a machine) performing or capable of performing.
n. 1. a person secretly employed in espionage for a government 2. someone who can be employed as a detective to collect information. adj. 1. being in force or having or exerting force 2. of or relating to a surgical operation 3. relating to or requiring or amenable to treatment by surgery especially as opposed to medicine 4. effective; producing a desired effect 5. (of e.g. a machine) performing or capable of performing. 
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1. Only one runway is operative.
2. The commercial telephone service was no longer operative.
3. External causes become operative through internal causes.
4. The scheme was fully operative by 1975.
5. This law becomes operative on 12 May.
6. The station will be operative again in January.
7. His job title is Chief Hygiene Operative.
8. The oil rig is now fully operative.
9. The station will be fully operative again in January.
10. This law becomes operative immediately.
11. The bicycle factory is now a workers'co - operative.
12. I was in love with her-'was' being the operative word.
13. When I say " come quickly "(sentencedict.com), the operative word is " quickly ".
14. The new system will not become fully operative until next year.
15. As long as the operative word is "greed", you can't count on people keeping the costs down.
16. The agreement will not become operative until all members have signed.
17. He was a painter - 'was' being the operative word since he died last week.
18. The party elected a seven-member operative committee.
19. The three major operative factors are as follows: 1.
20. Old trading restrictions are no longer operative.
21. The word liberty is the operative word.
22. Edgy is the operative word here.
23. Her message was that the data favour operative intervention.
24. Fast, by the way, is the operative word.
25. Frank was now a top CIA operative.
26. Feedback of information has been shown to change operative procedures in some non-randomised studies but not all.
27. The new system offers fast solutions. Fast being the operative word.
28. The boss is hopping mad about it and 'mad' is the operative word.
29. In an automated car plant there is not a human operative to be seen.
30. Without the soul in first gear with the Boss, brakes are difficult to apply and take longer to become operative.
More similar words: cooperative, post-operative, postoperative, cooperativeness, imperative, vituperative, degenerative, operation, operating, operations, operational, cooperation, AND operation, operating budget, lucrative, narrative, operating system, comparative, decorative, pejorative, figurative, in cooperation with, declarative, restorative, penetrative, surgical operation, commemorative, figuratively, comparatively, illustrative.