23 entries under adjective topic. ×

14
groundless(characteristic, precariousness, unfoundedness)
11
unsupported(characteristic, precariousness, unfoundedness)
9
reasonless(characteristic, precariousness, unfoundedness)
9
unjustifiable(characteristic, precariousness, unfoundedness)
9
unjustified(characteristic, precariousness, unfoundedness)
9
unsubstantiated(characteristic, precariousness, unfoundedness)
8
baseless(characteristic, precariousness, unfoundedness)
7
unfounded(characteristic, precariousness, unfoundedness)
7
ungrounded(characteristic, precariousness, unfoundedness)
6
unconfirmed(characteristic, precariousness, unfoundedness)
5
bottomless(characteristic, precariousness, unfoundedness)
4
flimsy(characteristic, precariousness, unfoundedness)
4
foundationless(characteristic, precariousness, unfoundedness)
4
gratuitous(characteristic, precariousness, unfoundedness)
4
uncorroborated(characteristic, precariousness, unfoundedness)
4
untenable(characteristic, precariousness, unfoundedness)
4
unwarranted(characteristic, precariousness, unfoundedness)
3
fictitious(fiction, art, creation, imagination)
1
cooked-up(imagination, invention, fiction)
1
fabled(imagination, invention, fiction)
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APASmart Define. (2016). based on thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/based_on/thesaurus/antonyms
ChicagoSmart Define. 2016. "based on thesaurus" https://smartdefine.org/based_on/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, based on thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/based_on/thesaurus/antonyms>.
MLASmart Define. "based on thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/based_on/thesaurus/antonyms>