Synonyms for malfunctioning
mal·func·tion·ing

Princeton's WordNetRate this synonym:4.5 / 2 votes

1. malfunctioning, nonfunctionaladjective

   not performing or able to perform its regular function

   "a malfunctioning valve"

   Synonyms:
   nonfunctional

   Antonyms:
   running(a), functioning, working(a), functional, operative, up(p)

PPDB, the paraphrase databaseRate these paraphrases:2.0 / 1 vote

1. List of paraphrases for "malfunctioning":

   malfunction, dysfunction, faulty, defective

How to pronounce malfunctioning?

How to say malfunctioning in sign language?

Usage in printed sourcesFrom: 

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How to use malfunctioning in a sentence?

1. Richard Gillespie:

   Counterfeit products can be deceiving at first glance, they're often cheaper and can appear very similar to the real thing. However, inferior products can end up costing consumers more than if they purchased the genuine item because of the high likelihood of substandard materials and malfunctioning parts.

2. Patty Davis:

   Never try to relight or handle malfunctioning fireworks.