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

123 entries under doubtful topic. ×

2
remote(adjective, dubious, improbable)
2
suspected(adjective, uncertain, dubious, suspicious)
2
thick(adjective, great, flat, poor, extraordinary)
2
unconfirmed(adjective, uncertain, shaky, vague)
2
unimaginable(extraordinary, amazing, dubious, unlikely)
2
unproven(adjective, uncertain, dubious, supposed)
2
untrusty(adjective, false, uncertain, dishonest)
2
wavering(adjective, uncertain, vague, hesitant)
1
erratic(adjective, unusual, strange, crazy, irregular)
1
hundred-to-one(unlikely, implausible)
1
inconstant(adjective, vague, hesitant, unpredictable)
1
not expected(expression, unlikely, implausible)
1
not likely(expression, dubious, unlikely, implausible)
1
on thin ice(expression, idiom, shaky, vague)
1
outside chance(expression, dubious, unlikely, implausible)
1
rare(weak, dubious, unlikely, implausible)
1
slim(unlikely, implausible)
1
slim and none(expression, idiom, unlikely, implausible)
1
touch and go(expression, idiom, uncertain, dubious)
1
unheard of(expression, unlikely, implausible)
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APASmart Define. (2015). questionable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/questionable/thesaurus/synonyms
ChicagoSmart Define. 2015. "questionable thesaurus" https://smartdefine.org/questionable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, questionable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/questionable/thesaurus/synonyms>.
MLASmart Define. "questionable thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/questionable/thesaurus/synonyms>