Synonyms|930Antonyms|415|Broader|15Narrower|12Related|3.8k

165 entries under doubtful topic. ×

2
changeable(adjective, unusual, uncertain, unstable, dishonest)
2
dangerous(adjective, delicate, uncertain, unstable)
2
inconstant(adjective, weak, false, loose, uncertain)
2
irregular(unusual, strange, vague, unreliable)
2
odd(adjective, unusual, strange, irregular)
2
open to doubt(expression, idiom, uncertain, astonishing)
2
sensitive(adjective, weak, delicate, uncertain, unstable)
2
tentative(open, uncertain, vague, hesitant)
2
thick(adjective, great, extraordinary, amazing)
2
thin(adjective, weak, great, extraordinary, unreasonable)
2
unapt
2
unconfident(adjective, uncertain, nervous, suspicious)
2
unconfirmed(uncertain, vague, unclear, unsure)
2
undefined(adjective, uncertain, vague, unknown)
2
unhealthy(adjective, delicate, uncertain, unstable)
2
unproven(uncertain, supposed, unsubstantiated, unconfirmed)
2
unsubstantial(extraordinary, unreasonable, amazing, unlikely)
1
betwixt and between(expression, adjective, idiom, open, uncertain)
1
contingent(adjective, delicate, uncertain, unstable)
1
delicate(adjective, weak, uncertain, unstable)
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ChicagoSmart Define. 2016. "dubious thesaurus" https://smartdefine.org/dubious/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, dubious thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/dubious/thesaurus/synonyms>.
MLASmart Define. "dubious thesaurus" 4 March 2016. Web. 26 September 2026. <https://smartdefine.org/dubious/thesaurus/synonyms>