Synonyms|435Antonyms|73|Broader|18Narrower|4Related|242

70 entries under undertake topic. ×

4
insure(verb, declare, commit, affirm)
4
secure(verb, declare, commit, affirm)
3
assent(noun, verb, declare, commit)
3
engage(verb, pass, declare, contract, commit)
2
agree(verb, pass, allow, catch, admit)
2
cross heart(verb, expression, state, maintain, agree)
2
plight(verb, declare, assert, engage, contract)
2
say so(verb, expression, state, give, maintain)
2
stipulate(verb, declare, commit, affirm)
2
subscribe(verb, support, back, declare, sign)
2
swear on bible(expression, idiom, state, maintain, agree)
2
swear up and down(verb, expression, idiom, state, give)
2
troth(pass, catch, commit)
2
underwrite(verb, declare, commit, affirm)
1
affiance(verb, pass, catch, declare, commit)
1
answer for(verb, expression, support, give, maintain)
1
asservate(verb, state, maintain, declare, tell)
1
betroth(verb, pass, catch, declare, commit)
1
bind(verb, pass, declare, commit)
1
contract(verb, declare, engage, commit)
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APASmart Define. (2015). vouch thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/vouch/thesaurus/synonyms
ChicagoSmart Define. 2015. "vouch thesaurus" https://smartdefine.org/vouch/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, vouch thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/vouch/thesaurus/synonyms>.
MLASmart Define. "vouch thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/vouch/thesaurus/synonyms>