malfunctioning

Definitions of malfunctioning
  1. adjective
    not performing or able to perform its regular function
    “a malfunctioning valve”
    synonyms: nonfunctional
    amiss, awry, haywire, wrong
    not functioning properly
    bad, defective
    not working properly
    out of whack
    out of balance or out of adjustment
    run-down
    having the spring unwound
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    Antonyms:
    functioning
    performing or able to perform its regular function
    functional, operative, running, working
    (of e.g. a machine) performing or capable of performing
    up
    (used of computers) operating properly
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