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DictionaryguaranteeFirm assurance
noun / verb

guarantee

gair-un-TEE/ɡˌɛrʌntˈi/

A firm assurance that an obligation will be fulfilled.

The representative gives a repair guarantee beside the customer's malfunctioning toaster.

At a simple repair counter, a service representative hands a customer a formal guarantee certificate beside the customer's malfunctioning toaster, making a promise of repair concrete without written explanation.
Etymology
guaranteeOld Frenchprotector; pledge

Old French garant could name a protector or a pledge. English guarantee first named the person giving security, then shifted to the promise itself—the assurance that an obligation will be met.

In context

Curiously Crypto2:35
there is usually no guarantee the project will gather enough capital for its development
What is a Utility Token? Do they ACTUALLY HAVE VALUE? #crypto

More examples

  • The store guarantees a full refund if the product fails.
  • Our contract includes a guarantee of payment within thirty days.
  • The bank guaranteed the loan when the business needed support.

Forms

guarantee · guarantees · guaranteed · guaranteeing

guarantor noun — A person or organization guaranteeing another's obligation.

Similar words

promise
Can be a personal commitment without formal backing.
assurance
Often offers reassurance without committing to fulfill an obligation.
warranty
Usually covers product condition and remedies for defects.