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

When legislation is framed as fulfilling a divine mandate, the state risks becoming an instrument of a particular faith rather than a neutral guarantor of liberty. —Brielle Miller, Baltimore Sun, 9 Mar. 2026

China lacks meaningful force projection in the region, offers no defense commitments and has consistently avoided the burdens of a security guarantor. —John Calabrese, The Conversation, 6 Mar. 2026

European leaders have also acted as guarantors of Ukrainian interests in the tortuous peace talks process. —Kevin Shalvey, ABC News, 24 Feb. 2026

There’s a religious element to Saudi policymaking as the guarantor of Mecca and Medina. —Isaac Chotiner, New Yorker, 17 Feb. 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
• 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