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

287 entries under adjective topic. ×

7
borderline(clear, certain, uncertain, doubtful)
7
contestable
7
dishonest(false, corrupt, immoral, deceitful)
7
fallible(uncertainty, unpredictable, unreliable, fickle)
7
implausible(weak, great, flat, poor)
7
in doubt(expression, idiom, clear, certain)
7
indeterminate(clear, certain, uncertain, doubtful)
7
unclear(clear, rough, certain, uncertain)
7
unresolved(uncertain, doubtful, unsettled, vague)
6
doubtable(uncertain, doubtful, unsettled, shaky)
6
false(dishonest, deceitful, unpredictable, unreliable)
6
far-fetched(extraordinary, uncertain, doubtful, absurd)
6
in question(expression, idiom, clear, weak)
6
indecisive(clear, certain, uncertain, anxious)
6
insecure(uncertain, unreliable, treacherous, incalculable)
6
mysterious(unusual, strange, uncertain, doubtful)
6
obscure(uncertain, doubtful, vague, dubious)
6
open(uncertain, doubtful, unsettled, shaky)
6
unconvincing(weak, great, flat, poor)
6
unscrupulous
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ChicagoSmart Define. 2015. "questionable thesaurus" https://smartdefine.org/questionable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, questionable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/questionable/thesaurus/synonyms>.
MLASmart Define. "questionable thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/questionable/thesaurus/synonyms>