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

The conflict has also begun to divide the Gulf from the United States, its main security guarantor. — Dina Esfandiary, Foreign Affairs, 27 Aug. 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

Europe’s defense sovereignty push, spurred by Washington’s retreat as the continent’s security guarantor, has hit several hurdles in recent months, including the demise of a joint German-French fighter jet project. — J.d. Capelouto, semafor.com, 15 July 2026