Synonyms|786Antonyms|286|Broader|13Narrower|11Related|3k

287 entries under adjective topic. ×

3
contentious(doubtful, dubious, provocative, debatable)
3
cryptic(uncertain, doubtful, vague, dubious)
3
dicey(shaky, unlikely, unpromising)
3
difficult(tricky, sticky, challenging)
3
discreditable
3
dishonourable
3
dodgy(corrupt, dishonest, dubious, suspect)
3
enigmatic(uncertain, doubtful, vague, dubious)
3
evasive
3
fantastic(unlikely, unbelievable, improbable)
3
hard to believe(expression, idiom, unbelief doubt)
3
hypothetical(supposed, assumed, guessed)
3
impossible(extraordinary, amazing, unlikely, unbelievable)
3
in dispute
3
louche
3
nefarious
3
open to doubt(expression, idiom, uncertain, doubtful)
3
peculiar(unusual, strange, dubious, suspect)
3
risky(doubtful, vague, unsure)
3
rocky
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APASmart Define. (2015). questionable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/questionable/thesaurus/synonyms
ChicagoSmart Define. 2015. "questionable thesaurus" https://smartdefine.org/questionable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, questionable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/questionable/thesaurus/synonyms>.
MLASmart Define. "questionable thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/questionable/thesaurus/synonyms>