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 (ŏp′ər-ə-tĭv, -ə-rā′tĭv, ŏp′rə-)
1. Being in effect; having force; operating: "Two major tendencies are operative in the American political system" (Heinz Eulau).
2. Functioning effectively; efficient.
3. Engaged in or concerned with physical or mechanical activity.
4. Of, relating to, or resulting from a surgical operation.
5. Significant; most important; key: The operative word is "low-fat."
1. A skilled worker, especially in industry.
a. A secret agent; a spy.
b. A private investigator.
3. One who works for a political organization, often wielding influence out of public view.

op′er·a·tive·ly adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adv.1.operatively - in a manner to produce an effect
References in periodicals archive ?
Contract notice: "washing, ironing, disinfection and sorting clinics / wards of hospital linen operatively underwear and clothing, clothing and blankets for the needs of university hospital -" dr.
Resultantly the concerned petrol pump has suspended the provision of fuel to the vehicles of TMA, while all vehicles of TMA are standing un operatively in the offices due to non availability of petrol and diesel.
Reported cases have occurred early post operatively, with a mean post-operative day of presentation of 46 in a review of 23 cases.
operatively associated with the response element; (iii) an FSH.