Synonyms of guarantor

guarantor

noun

ˌger-ən-ˈtȯr 

as in sponsor

a person who takes the responsibility for some other person or thing

the town police force is the guarantor of our safety

Synonyms & Similar Words

• sponsor
• patron
• supporter
• surety
• benefactor
• advocate
• teacher
• backer
• underwriter
• mentor
• coach
• champion
• chaperone
• cosigner
• cosponsor
• angel
• cosignatory

Example Sentences

Recent Examples of guarantor

At first, it was intended to be a temporary measure; yet the collapse of Venice’s maritime trade—once the guarantor of its prosperity—demanded that the Ghetto not only be retained but expanded. — Literary Hub, 8 Sep. 2026

Summers posted surety, meaning that his release was secured by a third-party guarantor. — Rachel Roberts, Idaho Statesman, 3 Sep. 2026

Her family, like Ayesha’s, ultimately secured her release through a guarantor and a hefty payment. — Mark Sappenfield, Christian Science Monitor, 14 Aug. 2026

Today, though, two of the largest guarantors of such completion bonds are merging in a move that could have a big impact on the indie film space. — Brian Welk, IndieWire, 21 July 2026