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Definition of operative adjective from the Oxford Advanced Learner's Dictionary

operative

adjective
 
/ˈɒpərətɪv/
 
/ˈɑːpərətɪv/
Idioms
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  1. [not usually before noun] ready to be used; in use synonym functional
    • This law becomes operative immediately.
    • The station will be fully operative again in January.
    • an agreement/an accord/a proposal/a tax/a rule/an amendment/an act becomes operative
    Oxford Collocations Dictionaryverbs
    • be
    • become
    • remain
    adverb
    • fully
    See full entry
  2. [only before noun] (medical) connected with a medical operation
    • operative treatment
    see also post-operativeTopics Healthcarec2
  3. Word Originlate Middle English: from late Latin operativus, from Latin operat- ‘done by labour’, from the verb operari, from opus, oper- ‘work’.
Idioms
the operative word
  1. used to emphasize that a particular word or phrase is the most important one in a sentence
    • I was in love with her—‘was’ being the operative word.
    • He seemed nice. But ‘seemed’ was the operative word.
See operative in the Oxford Advanced American DictionarySee operative in the Oxford Learner's Dictionary of Academic English
trait
noun
 
 
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