Questionable Synonyms

56 questionable synonyms include controversial, contentious, open to question, open to doubt, in doubt, doubtful, dubious, uncertain, and debatable. Questionable is an adjective, and its antonyms are certain and indisputable. Here are some additional synonyms for "questionable" with example sentences.

Another word for Questionable

56 other ways to say questionable.

1. controversial

  • unverified  
  •  
  • unsure
  •   
  • unsettled  
  •  
  • unresolved  
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  • unprovable  
  •  
  • undecided  
  •  
  • unconvincing  
  •  
  • unclear
  •   
  • uncertain  
  •  
  • spurious  
  •  
  • problematical  
  •  
  • problematic
  •   
  • open to question  
  •  
  • open to doubt  
  •  
  • not obvious  
  •  
  • not definite  
  •  
  • moot  
  •  
  • marginal  
  •  
  • in question  
  •  
  • in doubt
  •   
  • in dispute  
  •  
  • improbable  
  •  
  • implausible  
  •  
  • iffy  
  •  
  • equivocal  
  •  
  • dubious  
  •  
  • doubtful  
  •  
  • dodgy  
  •  
  • debatable  
  •  
  • controversial
  •   
  • contentious  
  •  
  • borderline  
  •  
  • arguable  
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  • apocryphal  
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2. suspicious

  • unsavoury  
  •  
  • under suspicion  
  •  
  • suspicious
  •   
  • suspect  
  •  
  • strange
  •   
  • shifty  
  •  
  • shady  
  •  
  • potentially illegal  
  •  
  • potentially dishonest  
  •  
  • odd
  •   
  • not quite right  
  •  
  • mysterious
  •   
  • murky  
  •  
  • irregular  
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  • iffy  
  •  
  • funny  
  •  
  • fishy  
  •  
  • dubious  
  •  
  • doubtful  
  •  
  • dodgy  
  •  
  • disreputable  
  •  
  • dark
  •   

Use questionable in a Sentence

His motives for helping seemed questionable.

She raised a questionable point about the report.

The source of that information is questionable.