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

Washington is the principal security guarantor of Qatar and other GCC states. —Monica Marks, Time, 19 Sep. 2025

The enhanced defense ties come as Gulf Arab states grow increasingly wary about the reliability of the United States as their longstanding security guarantor. —Reuters, CNN Money, 18 Sep. 2025

If adopted, a joint Muslim defense pact could reshape the balance of power in the Middle East while testing Washington's role as the region's security guarantor. —Amir Daftari, MSNBC Newsweek, 15 Sep. 2025

By contrast, in Northern Ireland, more balanced oversight structures, including joint institutions and international guarantors, gave weaker parties a meaningful stake in compliance and implementation. —Alpaslan Ozerdem, The Conversation, 2 Sep. 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