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guarantee synonyms

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[ US /ˌɡɛɹənˈti/ ]
[ UK /ɡˌæɹɑːntˈiː/ ]
Synonyms
To certify
support evidence ensure prove secure confirm witness warrant assure declare reassure endorse insure testify affirm attest evince aver answer for make sure
To ensure security
back mortgage stake pledge pawn wager
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