English Lexicon

Inoperative

/ɪnˈɒp.ər.ə.tɪv/
adjectiveCEFR C1 (Advanced)Top #8500 frequency
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Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Not working or not in operation; nonfunctional.

    "The emergency backup generator was found to be inoperative during the inspection."
  2. 2

    Not in force or no longer valid, typically referring to a law, agreement, or rule.

    "That clause in the contract became inoperative once the new regulations were enacted."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the Late Latin prefix 'in-' (meaning 'not') combined with 'operativus', stemming from the Latin verb 'operari' (to work). It entered the English language in the early 17th century, maintaining its core sense relating to something that is not functioning, effective, or in force.

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