67 entries under substantiate topic. ×

15
legalize(verb, law, support, favor, sustain)
9
validate(verb, support, favor, sustain, confirm)
8
legitimise(verb, favor, authorize, enable)
7
warrant(verb, support, allow, defend, sanction)
6
ratify(verb, endorse, prove)
5
make legal(verb, expression, idiom, endorse, prove)
4
approve(verb, support, favor, endorse)
4
certify(verb, endorse, prove)
4
confirm(verb, support, favor, defend, endorse)
4
constitute(verb, endorse, regulate, prove, verify)
3
support(verb, defend, explain, endorse, prove)
3
vindicate(verb, support, favor, defend, explain)
2
countenance(support, favor, defend, explain)
2
defend(verb, support, favor, explain)
2
establish(verb, support, favor, sustain, confirm)
2
sustain(verb, support, favor, defend, explain)
2
uphold(verb, support, defend, explain)
1
John Hancock(expression, endorse, prove, verify)
1
absolve(verb, support, favor, sustain, confirm)
1
acquit(verb, support, favor, sustain, confirm)
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APASmart Define. (2015). legitimize thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/legitimize/thesaurus/synonyms
ChicagoSmart Define. 2015. "legitimize thesaurus" https://smartdefine.org/legitimize/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, legitimize thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/legitimize/thesaurus/synonyms>.
MLASmart Define. "legitimize thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/legitimize/thesaurus/synonyms>