Synonyms|396Antonyms|161|Broader|3Narrower|0Related|1.4k
4
logical
3
based on
3
justified
2
rational
2
reasonable
2
solid
2
supported
2
valid
2
well-founded
2
reasoned
2
sane
2
satisfying
2
sensible
2
sober
2
sound
2
substantiated
1
good
1
cogent
1
commonsense
1
compelling
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APASmart Define. (2015). unfounded thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unfounded/thesaurus/antonyms
ChicagoSmart Define. 2015. "unfounded thesaurus" https://smartdefine.org/unfounded/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, unfounded thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unfounded/thesaurus/antonyms>.
MLASmart Define. "unfounded thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/unfounded/thesaurus/antonyms>