6
licence
6
make certain(verb, expression, idiom, support, maintain)
6
make sure(verb, expression, support, maintain, secure)
6
reassure(verb, support, state, maintain, secure)
6
secure(verb, support, maintain, establish, approve)
5
back up(verb, expression, support, praise, approve)
5
certificate(noun, recognize, sanction)
5
claim(verb, state, maintain, agree, allow)
5
enable(verb, make, meet, pass, allow)
5
entitle(verb, meet, pass, approve, uphold)
5
indorse
5
legalize(verb, endorse, prove, substantiate)
5
let(verb, support, make, release, pass)
5
notarize(verb, pass, sign, approve, authorize)
5
okay(verb, support, state, accept, release)
5
pass(verb, support, state, meet, release)
5
pledge(verb, support, maintain, secure, approve)
5
promise(verb, support, maintain, secure, approve)
5
second(verb, support, accept, favor, agree)
5
underwrite(verb, support, favor, back, approve)
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APASmart Define. (2016). certify thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/certify/thesaurus/synonyms
ChicagoSmart Define. 2016. "certify thesaurus" https://smartdefine.org/certify/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, certify thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/certify/thesaurus/synonyms>.
MLASmart Define. "certify thesaurus" 11 January 2016. Web. 20 September 2026. <https://smartdefine.org/certify/thesaurus/synonyms>