guarantor

noun

guar·​an·​tor ˌger-ən-ˈtȯr 

ˌgär-, 

ˌga-rən-;

ˈger-ən-tər, 

ˈgär-, 

ˈga-rən- 

1

: one that promises to answer for the payment of a debt or performance of a duty in case of the other's default or failure to perform : one that gives a guaranty (see guarantee entry 1 sense 3)

2

: one that guarantees

Synonyms of guarantor

• sponsor
• patron

Examples of guarantor in a Sentence

the town police force is the guarantor of our safety

Recent Examples on the Web

Early in negotiations, Tehran had been eager to secure China’s backing as a guarantor in a peace deal, but Beijing has shown little interest in playing such a formal - and potentially vexed - role. —Simone McCarthy, CNN Money, 20 June 2026

The deal already raises serious questions about the credibility of the United States not only as a guarantor of freedom of navigation in the global commons, but also as a global power that can make its red lines stick. —Ariel Cohen, Forbes.com, 18 June 2026

Meanwhile, Washington no longer functions in its traditional role as a guarantor of global energy security. —Tim McDonnell, semafor.com, 16 June 2026

The city is also on the hook as the financial guarantor of the Games. —The Editorial Board, Daily News, 28 May 2026

Word History

Etymology

see guaranty entry 1

First Known Use

circa 1828, in the meaning defined at sense 1

Rhymes for guarantor

• albacore
• alongshore
• antiwar
• anymore
• carnivore
• commodore
• dinosaur
• evermore
• furthermore
• herbivore
• heretofore
• matador

Kids Definition

guarantor

noun

guar·​an·​tor ˌgar-ən-ˈtȯ(ə)r  ˈgar-ən-tər 

ˌgär-, 

ˈgär-

: one that gives a guarantee

Legal Definition

guarantor

noun

guar·​an·​tor ˌgar-ən-ˈtȯr, ˌgär-; ˈgar-ən-tər, ˈgär- 

: one that makes or gives a guaranty