Difference between Guarantee and Guaranty

By: | Updated: Dec-14, 2017

“Guarantee” is a fairly common word in the English language. Anyone who speaks English probably understands what it means and is able to correctly use it in a sentence. Easy right? Sure… until you realize that the word “guaranty” also exists in the English language. This might make you ask, “What is the difference between guarantee and guaranty?”

Summary Table

Functions as a noun and a verbFunctions as a noun
Used in informal contexts and casual conversationsUsed in formal contexts such as banking and legal documents



The word guarantee is a noun and a verb. As a noun, it means:

  • A verbal or written assurance that a condition will be fulfilled or an act will be done or not done; for example: The $45,000 watch Dandy just bought comes with a lifetime guarantee.
  • The state of being confident sure of a specific result; for example: I know Professor Hart said he’ll give you a chance, but we know there’s really no guarantee.

As a verb, it means:

  • To commit that an act will be done or a promise will be fulfilled; for example: I guarantee you that the clients will accept this offer.
  • To agree to answer someone else’s obligation; for example: John Smith Sr. guaranteed his son’s housing loan.
  • To be sure that a specific result will happen; for example: Taking two capsules of glutathione daily will guarantee you whiter and fairer skin.

On the other hand, the word guaranty is a noun that means:

  • Something that is used as a security that an action will be done; for example: I’d like to think that this ring you gave me is a guaranty that you will really marry me.
  • The assurance that a person will pay the debt of another person if the latter fails to fulfill his obligation; for example: Mr. Abdul signed and submitted a guaranty that he will pay his wife’s debts.

Originally, “guaranty” functioned as a verb but now only functions as a noun. It is used in more formal contexts such as banking, financial, and legal writing. It is rarely used in casual conversations or informal writing.

Guarantee vs Guaranty

What, then, is the difference between “guarantee” and guaranty”?

Both words have the same meaning as a noun. They both mean “assurance” or “promise that something will be done or an obligation will be fulfilled.” However, “guarantee” is both a noun and a verb whereas “guaranty” only functions as a noun. Additionally, “guarantee” is used in casual and informal contexts while “guaranty” is only used in legal and financial writing.

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