Synonyms|263Antonyms|79|Broader|1Narrower|0Related|671
1
testify
1
to be trusted(expression, idiom)
1
tried and tested(adjective, test, expert, reliable)
1
trustable
1
trusty
1
unanswerable(set, sound, reasonable, certain, rational)
1
unassailable(set, certain, definite, unquestionable, indisputable)
1
undeniable
1
undoubted(adjective, undisputed)
1
unfalse
1
unimpeachable(set, certain, unquestionable, indisputable, unassailable)
1
unperfidious
1
unquestionable
1
untreacherous
1
useful
1
valuable
1
well tried(adjective, test, expert, reliable)
0
actual(adjective, certain, definite, obvious, unquestionable)
0
aesculapian
0
affirm
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ChicagoSmart Define. 2015. "proven thesaurus" https://smartdefine.org/proven/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, proven thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/proven/thesaurus/synonyms>.
MLASmart Define. "proven thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/proven/thesaurus/synonyms>