Synonym: assure, back, certify, endorse, pledge, promise, secure, sponsor, stand for, swear, underwrite, warrant. Antonym: guarantor. Similar words: guarantor, quarantine, guard, on guard, vanguard, lingua franca, fair and square, volunteer. Meaning: [‚gærən'tɪː] 
n. 1. a written assurance that some product or service will be provided or will meet certain specifications 2. a pledge that something will happen or that something is true 3. a collateral agreement to answer for the debt of another in case that person defaults. v. 1. give surety or assume responsibility 2. make certain of 3. promise to do or accomplish 4. stand behind and guarantee the quality, accuracy, or condition of.
n. 1. a written assurance that some product or service will be provided or will meet certain specifications 2. a pledge that something will happen or that something is true 3. a collateral agreement to answer for the debt of another in case that person defaults. v. 1. give surety or assume responsibility 2. make certain of 3. promise to do or accomplish 4. stand behind and guarantee the quality, accuracy, or condition of. 
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1. Who can guarantee that his story is true?
2. All our products come with a two-year guarantee.
3. We can't guarantee our workers' regular employment.
4. The new television had a guarantee with it.
5. We cannot guarantee adequate supplies of raw materials.
6. I guarantee you'll love this film.
7. Surplus resources alone do not guarantee growth.
8. They were unwilling, or unable, to guarantee safe passage from the city to the aircraft.
9. The symbol on the packet is a guarantee that the food has been produced organically.
10. He will guarantee us possession of the house by May.
11. The vigorous pursuit of policies is no guarantee of success.
12. The guarantee could be worthless if the firm goes out of business.
13. Living together before you marry is no guarantee of future happiness.
14. Neither country would guarantee the integrity of their common frontier.
15. Can you give me a cast-iron guarantee that the work will be completed on time?
16. He gave me a guarantee that it would never happen again.
17. The possession of a degree does not guarantee you a job.
18. California's state Constitution includes a guarantee of privacy.
19. The doctor can't guarantee a cure.
20. We cannot guarantee the accuracy of these figures.
21. The makers guarantee this special glass against breakage!
22. The machine comes with a three-year no quibble guarantee.
23. We didn't get any firm guarantee of a loan.
24. We guarantee to be here tomorrow.
25. Whichever you buy, there is a six-month guarantee.
26. We cannot guarantee our flights will never be delayed.
27. This guarantee is valid for one year.
28. We guarantee to deliver within a week.
29. The system costs £99.95 including postage[Sentencedict.com], packing and a 12-month guarantee.
30. We urge you to adopt all necessary measures to guarantee people's safety.
More similar words: guarantor, quarantine, guard, on guard, vanguard, lingua franca, fair and square, volunteer, absenteeism, far and away, paranoid, harangue, far and near, forbearance, appearance, grant, tyrant, errant, warrant, vibrant, frantic, vagrant, ignorant, hydrant, warranty, fragrant, aberrant, tolerant, debutante, exuberant.