Synonyms|115Antonyms|87|Broader|0Narrower|0Related|1.2k
1
unreliable
1
unsettled
1
unshown
1
unstable
1
unsteady
1
unsupported by evidence(expression, idiom)
1
unsustained
1
untested
1
untried
1
untrue(adjective, false, illogical, inaccurate, deceptive)
1
untrustworthy
1
unvalidated
1
unwarranted
1
vain(adjective, untrue, illogical, deceptive, unsupported)
1
without foundation(expression, adjective, untrue, illogical, deceptive)
1
without grounds
1
without substantiation
1
wobbly
0
Unmet
0
alleged
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APASmart Define. (2016). unsubstantiated thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unsubstantiated/thesaurus/synonyms
ChicagoSmart Define. 2016. "unsubstantiated thesaurus" https://smartdefine.org/unsubstantiated/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, unsubstantiated thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unsubstantiated/thesaurus/synonyms>.
MLASmart Define. "unsubstantiated thesaurus" 3 February 2016. Web. 26 September 2026. <https://smartdefine.org/unsubstantiated/thesaurus/synonyms>