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

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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 Although with no guarantee of getting the monkeypox vaccine that day, Aarons -- and just about everyone in line -- stayed put. David Culver And Elizabeth Joseph, CNN, 5 Aug. 2022 China’s rise will benefit the Japanese economy and that Washington’s security guarantee is ironclad. Richard J. Samuels, WSJ, 28 July 2022 An uptime guarantee may be more appealing to business customers. The Salt Lake Tribune, 21 July 2022 The screen comes with a 30-day money-back guarantee. Kathleen Willcox, Popular Mechanics, 28 June 2022 People with knowledge of the deal told The Associated Press that the minimum guarantee is worth $250 million per year. Joe Reedy, ajc, 14 June 2022 That guarantee has been crucial to persuading many people, including noncitizens and those from racial and ethnic minority groups, to voluntarily turn over personal information. New York Times, 21 Apr. 2022 But the board only possesses authorization for two years (beginning in December 2020) with no guarantee that future laws will sustain it. Nicole Sganga, CBS News, 8 July 2022 But the road to the ballot is costly, cumbersome and comes with no guarantee of success. Jessie Balmert, The Enquirer, 29 June 2022 Recent Examples on the Web: Verb That said, just because housing activity is falling doesn’t guarantee that house prices will also fall. Lance Lambert, Fortune, 1 Aug. 2022 According to the National Conference of State Legislatures, federal tribal recognition carries with it federal funding opportunities, whereas state recognition does not guarantee state funding. Iris Samuels, Anchorage Daily News, 29 July 2022 Shortly after his twin girls were born, Mr. Jadeja started researching if there was any way to guarantee a boy next time. Sushmita Pathak, The Christian Science Monitor, 7 July 2022 There is no way to guarantee that your job will be safe, career advisers say. Ray A. Smith, WSJ, 21 June 2022 Here's one way to guarantee that your baby and her bestie automatically win Cutest Best Friend Costume. Cameron Jenkins, Good Housekeeping, 21 June 2022 Whether this bill moves forward or not, boosting payroll taxes in some fashion is viewed as a way to guarantee that current and future retirees don't lose benefits after 2035. Aimee Picchi, CBS News, 16 June 2022 This means there's no way to guarantee that your ads won't appear next to unsavory videos. Blair Currie, Forbes, 16 June 2022 Sliding under the covers — only to be welcomed by a set of old, scratchy sheets — is hardly the way to guarantee a good night's sleep. Amy Schulman,, 1 June 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

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Time Traveler for guarantee

Time Traveler

The first known use of guarantee was in 1680

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Dictionary Entries Near guarantee




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Last Updated

12 Aug 2022

Cite this Entry

“Guarantee.” Dictionary, Merriam-Webster, Accessed 14 Aug. 2022.

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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


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