say it: AH-pur-uh-tiv
operative is an adjective and noun meaning "being in force or having or exerting force". It carries 6 recorded senses.
being in force or having or exerting force
“operative regulations”
“the major tendencies operative in the American political system”
relating to or requiring or amenable to treatment by surgery especially as opposed to medicine
“a surgical appendix”
“a surgical procedure”
“operative dentistry”
(of e.g. a machine) performing or capable of performing
“in running (or working) order”
“a functional set of brakes”
a person secretly employed in espionage for a government
someone who can be employed as a detective to collect information
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for operative come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.