92 entries under promise topic. ×

8
aver(verb, support, state, maintain, secure)
8
hearten(verb, encourage, raise, cheer, speech)
8
inspire(verb, encourage, cheer, speech, comfort)
8
make certain(verb, expression, idiom, support, maintain)
8
vouch(verb, support, state, give, back)
7
prove(verb, support, get, maintain, secure)
7
vouch for(verb, expression, phrasal verb, support, maintain)
6
comfort(verb, encourage, cheer, inspire)
5
endorse(verb, support, state, maintain, secure)
5
sell(verb, get, meet, encourage, do)
5
support(verb, cover, keep, maintain, encourage)
5
testify(verb, support, state, maintain, secure)
4
agree(verb, commit, undertake, guarantee)
4
stand behind(verb, expression, support, maintain, secure)
4
undertake(verb, agree, declare, approve, uphold)
4
witness(verb, support, state, maintain, secure)
3
back(verb, support, maintain, secure, declare)
3
brace up(verb, expression, phrasal verb, guarantee)
3
buck up(verb, expression, phrasal verb, encourage, inspire)
3
declare(verb, support, state, maintain, back)
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APASmart Define. (2015). assure thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/assure/thesaurus/synonyms
ChicagoSmart Define. 2015. "assure thesaurus" https://smartdefine.org/assure/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, assure thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/assure/thesaurus/synonyms>.
MLASmart Define. "assure thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/assure/thesaurus/synonyms>