4
certify(verb, endorse, prove, substantiate)
4
confirm(verb, support, favor, defend, endorse)
4
constitute(verb, endorse, regulate, prove, verify)
4
decree(verb, legalize)
3
empower(verb, allow, authorize, sanction, enable)
3
formulate(verb, legalize)
3
launder(verb, legalize)
3
legislate(verb, legalize)
3
ordain(verb, legalize)
3
regulate(verb, legalize)
3
sanctify
3
support(verb, defend, explain, endorse, prove)
3
vindicate(verb, support, favor, defend, explain)
2
countenance(support, favor, defend, explain, substantiate)
2
defend(verb, support, favor, explain, substantiate)
2
enable(allow, authorize, sanction, authorise)
2
entitle(allow, authorize, sanction, enable, authorise)
2
establish(verb, support, favor, sustain, confirm)
2
substantiate(verb, support, favor, sustain, confirm)
2
sustain(verb, support, favor, defend, explain)
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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>