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

42 entries under adjective topic. ×

9
unsubstantiated(unwarranted, untrue, flimsy, questionable)
5
unconfirmed(unwarranted, untrue, flimsy, unsubstantiated)
5
unsupported
4
groundless(unwarranted, untrue, flimsy, unsubstantiated)
4
unfounded(unwarranted, untrue, flimsy, unsubstantiated)
4
unproven(unsubstantiated, unconfirmed)
3
baseless
3
unofficial
2
unverified(unsubstantiated, unconfirmed)
2
unwarranted(untrue, flimsy, unsubstantiated, unfounded)
1
bottomless(unwarranted, untrue, flimsy, unsubstantiated)
1
doubtful(unsubstantiated, unconfirmed)
1
flimsy(unwarranted, untrue, unsubstantiated, unfounded)
1
foundationless(unwarranted, untrue, flimsy, unsubstantiated)
1
gratuitous(unwarranted, untrue, flimsy, unsubstantiated)
1
hard to believe(expression, idiom, unsubstantiated, unconfirmed)
1
open to doubt(expression, idiom, unsubstantiated, unconfirmed)
1
open to question(expression, idiom, unsubstantiated, unconfirmed)
1
reasonless(unwarranted, untrue, flimsy, unsubstantiated)
1
ungrounded(unwarranted, untrue, flimsy, unsubstantiated)
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APASmart Define. (2015). uncorroborated thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/uncorroborated/thesaurus/synonyms
ChicagoSmart Define. 2015. "uncorroborated thesaurus" https://smartdefine.org/uncorroborated/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, uncorroborated thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/uncorroborated/thesaurus/synonyms>.
MLASmart Define. "uncorroborated thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/uncorroborated/thesaurus/synonyms>