Synonyms|930Antonyms|415|Broader|15Narrower|12Related|3.8k

42 entries under adjective topic. ×

19
certain(valid, undoubtable)
16
sure(clear, honest, certain, definite)
11
clear
8
definite(clear, honest)
8
unambiguous
8
reliable(clear, honest)
7
determined(verb, clear, honest)
7
unquestionable(clear, honest)
6
positive(clear, honest)
4
doubtless(adverb, clear, honest, likely)
4
probable(clear, honest)
4
trustworthy
4
undoubted(clear, honest)
3
believable(clear, honest)
3
indisputable
3
undeniable
3
secure(clear, honest)
3
trusty(clear, honest)
3
unequivocal
2
likely(clear, honest)
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APASmart Define. (2016). dubious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/dubious/thesaurus/antonyms
ChicagoSmart Define. 2016. "dubious thesaurus" https://smartdefine.org/dubious/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, dubious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/dubious/thesaurus/antonyms>.
MLASmart Define. "dubious thesaurus" 4 March 2016. Web. 24 September 2026. <https://smartdefine.org/dubious/thesaurus/antonyms>