guarantor

noun

guar·​an·​tor ˌger-ən-ˈtȯr 

ˌgär-,

ˌga-rən-;

ˈger-ən-tər,

ˈgär-,

ˈga-rən- 

1

: one that gives a guaranty (see guarantee entry 1 sense 3)

2

: one that guarantees

Synonyms

• sponsor
• patron

Examples of guarantor in a Sentence

the town police force is the guarantor of our safety

Recent Examples on the Web

The prison system, far from serving as a guarantor of dignity and successful reintegration, has become a space where power is used as a mechanism of abuse and extortion, said Noah Bullock, executive director of Cristosal. —Antonio María Delgado, Miami Herald, 2 Sep. 2025

Russia’s demand that it be included as security guarantor against its own aggression must thus be rejected categorically. —Michael McFaul, Foreign Affairs, 27 Aug. 2025

Seeking 500 Homers Both Alonso and Yankees slugger Aaron Judge, owner of the American League’s single-season home run record (62 in 2022), have their sights set on 500 home runs – a likely guarantor of a plaque in the Hall of Fame gallery. —Dan Schlossberg, Forbes.com, 11 Aug. 2025

That’s why a strong state was needed to act as a guarantor. —Lilit Mkhitaryan, Chicago Tribune, 9 Aug. 2025

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
• blastopore
• carnivore
• commodore
• dinosaur
• evermore
• furthermore
• herbivore
• heretofore

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