Synonyms|909Antonyms|156|Broader|7Narrower|0Related|1.8k
16
clever
16
reasonable
8
sane
8
prudent
7
sensible
7
logical
6
believable
6
wise
5
judicious
5
rational
5
sagacious
5
sage
5
serious
5
valid
4
brainy
4
bright
4
conceivable
4
credible
4
earnest
3
solemn
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APASmart Define. (2015). preposterous thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/preposterous/thesaurus/antonyms
ChicagoSmart Define. 2015. "preposterous thesaurus" https://smartdefine.org/preposterous/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, preposterous thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/preposterous/thesaurus/antonyms>.
MLASmart Define. "preposterous thesaurus" 2 September 2015. Web. 22 September 2026. <https://smartdefine.org/preposterous/thesaurus/antonyms>