2
uphold(verb, support, defend, explain, substantiate)
1
John Hancock(expression, endorse, prove, verify, substantiate)
1
absolve(verb, support, favor, sustain, confirm)
1
accept
1
acknowledge
1
acquit(verb, support, favor, sustain, confirm)
1
admit
1
adopt
1
advocate(support, favor, defend, explain, substantiate)
1
alibi(verb, support, favor, sustain, confirm)
1
answer for(expression, support, favor, defend, substantiate)
1
apologize for(expression, support, favor, defend, substantiate)
1
argue for(verb, expression, support, favor, sustain)
1
assert(support, favor, defend, explain, substantiate)
1
authenticate(endorse, prove, verify, substantiate, corroborate)
1
authorise
1
be answerable for(verb, support, favor, sustain, confirm)
1
bear out(verb, expression, support, favor, sustain)
1
brief(verb, support, favor, sustain, confirm)
1
charter
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APASmart Define. (2015). legitimize thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/legitimize/thesaurus/synonyms
ChicagoSmart Define. 2015. "legitimize thesaurus" https://smartdefine.org/legitimize/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, legitimize thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/legitimize/thesaurus/synonyms>.
MLASmart Define. "legitimize thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/legitimize/thesaurus/synonyms>