9
determined(verb, adjective, usual, regular, persistent)
9
accepted(verb, adjective, set, usual, established)
9
fixed(adjective, set, hard, complete, rough)
7
attested(verb, good, sound, right, reasonable)
7
ascertained(verb, proved, ascertained)
7
authorized(verb, adjective, conventional, customary, established)
7
deep-rooted(adjective, set, complete, continue, true)
7
deep-seated(adjective, set, complete, continue, true)
7
definite(adjective, solid, certain, determined, usual)
7
entrenched(adjective, set, complete, continue, determined)
7
firm(adjective, hard, rough, harsh, certain)
7
persistent(adjective, usual, steady, regular, routine)
7
regular(adjective, proper, determined, common, usual)
7
rooted(adjective, certain, determined, usual, regular)
6
avowed(verb, adjective, assured, supported, feigned)
6
endorsed(verb, certain, definite, sure, conventional)
6
ratified(verb, approved)
6
sanctioned(verb, adjective, conventional, customary, established)
6
steady(adjective, certain, usual, regular, limited)
6
supported(verb, adjective, substantiated, evinced, evidential)
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APASmart Define. (2016). confirmed thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/confirmed/thesaurus/synonyms
ChicagoSmart Define. 2016. "confirmed thesaurus" https://smartdefine.org/confirmed/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, confirmed thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/confirmed/thesaurus/synonyms>.
MLASmart Define. "confirmed thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/confirmed/thesaurus/synonyms>