guar·​an·​tee | \ ˌger-ən-ˈtē How to pronounce guarantee (audio) , ˌgär-, ˌga-rən- also ˈger-ən-ˌtē or ˈgär-ən- How to pronounce guarantee (audio) , ˈga-rən- How to pronounce guarantee (audio) \

Definition of guarantee

 (Entry 1 of 2)

1 : guarantor
3 : an assurance for the fulfillment of a condition: such as
a : an agreement by which one person undertakes to secure another in the possession or enjoyment of something
b : an assurance of the quality of or of the length of use to be expected from a product offered for sale often with a promise of reimbursement The washer comes with a guarantee against major defects.


guaranteed; guaranteeing; guarantees

Definition of guarantee (Entry 2 of 2)

transitive verb

1 : to undertake to answer for the debt, default, or miscarriage of guarantee a loan
2 : to engage for the existence, permanence, or nature of : undertake to do or secure guarantee the winning of three tricks
3 : to give security to guaranteed her against loss
4 : to assert confidently I guarantee you'll like it

Synonyms for guarantee

Synonyms: Noun

Synonyms: Verb

Visit the Thesaurus for More 

Examples of guarantee in a Sentence

Noun And as key pieces of the infrastructure are knocked out, there is no guarantee that they will be repaired or rebuilt, at least not as they were before. — Naomi Klein, Harper's, October 2007 It might be no bad thing if the Constitution's guarantee of "equal protection of the laws" was interpreted to outlaw the vagaries of voting … — Michael Kinsley, New York Times Book Review, 5 Nov. 2006 Collecting can be a sort of love-sickness. If you begin collecting living things,  … even if you manage to find them and then possess them, there is no guarantee they won't die or change. — Susan Orlean, New Yorker, 23 Jan. 1995 The washer comes with a guarantee against major defects. They wanted a guarantee that the document was authentic. They want the new contract to include a guarantee of job security. The U.S. Constitution includes guarantees against unreasonable searches. He cited the First Amendment guarantee of free speech. Verb They're called change agents. They swoop in to transform stodgy institutions …  . It's a risky tack, one that guarantees large numbers of people will hate the boss's guts. — Daniel McGinn, Newsweek, 28 Feb. 2005 For an incumbent President …  . The power of the office and the media coverage its holder is guaranteed for just doing his job generally give him the luxury of staying above the fray. — Joe Klein, Time, 22 Mar. 2004 Voucher plans were adopted largely as a last resort, an effort to guarantee a semblance of school choice for low-income minority students in failing inner-city schools. — Jeffrey Rosen, New Republic, 18 Mar. 2002 The washer is guaranteed against defects for one year. They guarantee that the diamonds they sell are top quality. He offered to personally guarantee the loan. The investment was guaranteed by the bank. I guarantee that you'll be satisfied. He guaranteed us that everything would go according to plan. Money doesn't guarantee a happy life. He guaranteed a victory in the championship game. See More
Recent Examples on the Web: Noun In the short term, however, joining NATO will provide Finland with the security guarantee of Article 5, which compels members to come to an ally’s aid if attacked. Sharon Weinberger, WSJ, 25 Aug. 2022 The higher-education cartel has a government guarantee that its consumer can afford any price. WSJ, 28 Aug. 2022 And the country has little guarantee that the current mortality average will even hold. Katherine J. Wu, The Atlantic, 16 Aug. 2022 Goldco has the highest buy-back guarantee for its customers. Laxmi Corp, The Salt Lake Tribune, 12 July 2022 In other words, one size doesn’t fit all, which means there is no guarantee that the 4% rule in and of itself is the best approach for you. Juan Carlos Medina, Forbes, 16 May 2022 There’s no guarantee all the rookies will be back either. Wilson Moore, The Indianapolis Star, 17 Aug. 2022 While Biden has promised an announcement on wide-scale student loan forgiveness before August 31, 2022, there’s no guarantee that Biden will cancel $10,000 of student loans (or any other amount) for for more than 40 million student loan borrowers. Zack Friedman, Forbes, 16 Aug. 2022 The Storm have clinched a playoff spot, but with the WNBA’s new playoff format, there’s no guarantee the Storm will end up with a home game in the first round. Tim Booth, Hartford Courant, 6 Aug. 2022 Recent Examples on the Web: Verb Adding a few evergreen trees to your landscape is an easy way to guarantee color in your garden all year long. Viveka Neveln, Better Homes & Gardens, 26 Aug. 2022 At the Winter Park Playhouse, which in a typical year sells out nearly all its performances, a season ticket may be the only way to guarantee a seat. Matthew J. Palm, Orlando Sentinel, 22 Aug. 2022 The best way to guarantee consistent growth is by keeping your existing customer base while scouting for new ones. Abiola Salami, Forbes, 16 Aug. 2022 There’s no way to guarantee that a natural water source will be contaminant-free. Wes Siler, Outside Online, 13 Aug. 2022 There is no way to guarantee that ESA money is spent on real educational expenses, rather than being pocketed for other expenses. Brynn Tannehill, The New Republic, 11 Aug. 2022 States without laws that guarantee paid sick leave range from Alabama to Wyoming, according to human resources site SHRM. Aimee Picchi, CBS News, 30 Aug. 2022 The property has room packages that guarantee different views of the festivities. Isis Briones, House Beautiful, 26 Aug. 2022 This book is filled with mindless information that will guarantee intriguing conversation starters until the end of time. Corinne Sullivan, Woman's Day, 24 Aug. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'guarantee.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of guarantee


1680, in the meaning defined at sense 1


1731, in the meaning defined at sense 1

History and Etymology for guarantee


probably alteration of guaranty entry 1


derivative of guarantee entry 1

Learn More About guarantee

Time Traveler for guarantee

Time Traveler

The first known use of guarantee was in 1680

See more words from the same year

Dictionary Entries Near guarantee




See More Nearby Entries 

Statistics for guarantee

Last Updated

17 Sep 2022

Cite this Entry

“Guarantee.” Dictionary, Merriam-Webster, Accessed 28 Sep. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for guarantee


guar·​an·​tee | \ ˌger-ən-ˈtē How to pronounce guarantee (audio) , ˌgär- \

Kids Definition of guarantee

 (Entry 1 of 2)

1 : a promise that something will be or will happen as stated a guarantee against defects
2 : something given as a promise of payment : security


guaranteed; guaranteeing

Kids Definition of guarantee (Entry 2 of 2)

1 : to make a promise about the condition or occurrence of something guarantee a car
2 : to promise to be responsible for the debt or duty of another person I'll guarantee his loan.


guar·​an·​tee | \ ˌgar-ən-ˈtē, ˌgär- How to pronounce guarantee (audio) \

Legal Definition of guarantee

1 : guarantor
3 : an assurance that a condition will be fulfilled: as
a : an agreement by which one person undertakes to secure another in the possession or enjoyment of something
b : an assurance of the quality or of the length of use to be expected from a product offered for sale often with a promise of reimbursement
4 : guaranty sense 4, 5 constitutional guarantees

Other Words from guarantee

guarantee transitive verb

History and Etymology for guarantee

probably alteration of guaranty

More from Merriam-Webster on guarantee

Nglish: Translation of guarantee for Spanish Speakers

Britannica English: Translation of guarantee for Arabic Speakers Encyclopedia article about guarantee


Test Your Vocabulary

Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!