14
endorse(verb, compact)
13
support(noun, verb, evidence)
12
back(verb, money)
8
confirm(verb, compact, assent)
7
certify
7
ratify(compact, evidence, assent)
6
affirm(verb, assent)
6
approve
6
countersign(evidence, security, assent)
6
sanction(noun, verb, approbation)
6
second
6
sign(noun, verb, compact)
5
attest(verb, compact)
5
underwrite(verb, compact, security)
5
uphold(verb, evidence, approbation)
4
accept(verb, security)
4
assure(verb, security)
4
back up(verb, expression, phrasal verb)
4
corroborate(verb, evidence, assent)
4
plump for(verb, expression, phrasal verb)
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APASmart Define. (2015). indorse thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/indorse/thesaurus/synonyms
ChicagoSmart Define. 2015. "indorse thesaurus" https://smartdefine.org/indorse/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, indorse thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/indorse/thesaurus/synonyms>.
MLASmart Define. "indorse thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/indorse/thesaurus/synonyms>