Synonyms|86Antonyms|23|Broader|0Narrower|0Related|15

32 entries under unsubstantiated topic. ×

5
unconfirmed(adjective, unwarranted, untrue, flimsy)
4
groundless(adjective, unwarranted, untrue, flimsy)
4
unfounded(adjective, unwarranted, untrue, flimsy)
4
unproven(adjective, unconfirmed)
2
unverified(adjective, unconfirmed)
2
unwarranted(adjective, untrue, flimsy, unfounded)
1
bottomless(adjective, unwarranted, untrue, flimsy)
1
doubtful(adjective, unconfirmed)
1
flimsy(adjective, unwarranted, untrue, unfounded)
1
foundationless(adjective, unwarranted, untrue, flimsy)
1
gratuitous(adjective, unwarranted, untrue, flimsy)
1
hard to believe(expression, adjective, idiom, unconfirmed)
1
open to doubt(expression, adjective, idiom, unconfirmed)
1
open to question(expression, adjective, idiom, unconfirmed)
1
reasonless(adjective, unwarranted, untrue, flimsy)
1
ungrounded(adjective, unwarranted, untrue, flimsy)
1
unjustifiable(adjective, unwarranted, untrue, flimsy)
1
unjustified(adjective, unwarranted, untrue, flimsy)
1
untenable(adjective, unwarranted, untrue, flimsy)
0
arguable(adjective, unconfirmed)
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APASmart Define. (2015). uncorroborated thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/uncorroborated/thesaurus/synonyms
ChicagoSmart Define. 2015. "uncorroborated thesaurus" https://smartdefine.org/uncorroborated/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, uncorroborated thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/uncorroborated/thesaurus/synonyms>.
MLASmart Define. "uncorroborated thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/uncorroborated/thesaurus/synonyms>