404 entries under verb topic. ×

6
safeguard(noun, cover, care, confirm)
6
seal(noun, secure, settle, back)
6
verify(support, state, maintain, back)
5
authenticate(support, state, praise, settle)
5
bargain(noun, order, accept, start)
5
defend(support, show, praise, favor)
5
reassure(state, encourage, restore, confirm)
5
stand behind(expression, phrasal verb, support, praise)
4
angel(support, secure, back, approve)
4
avouch(state, maintain, declare, approve)
4
avow(support, state, maintain, back)
4
back up(expression, phrasal verb, support, maintain)
4
certificate(noun, agreement, permit, recognize)
4
clinch(state, maintain, secure, settle)
4
corroborate(support, state, maintain, back)
4
cover(noun, protect, bond, protection)
4
finance(support, help, set, promote)
4
maintain(support, state, favor, back)
4
ratify(support, state, maintain, praise)
4
sanction(noun, support, state, secure)
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APASmart Define. (2015). guarantee thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/guarantee/thesaurus/synonyms
ChicagoSmart Define. 2015. "guarantee thesaurus" https://smartdefine.org/guarantee/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, guarantee thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/guarantee/thesaurus/synonyms>.
MLASmart Define. "guarantee thesaurus" 24 December 2015. Web. 25 September 2026. <https://smartdefine.org/guarantee/thesaurus/synonyms>