guarantee
US /ˌɡærənˈti/
・UK /ˌɡærən'ti:/
A2TOEIC
v.t.Transitive VerbTo promise to repair a broken product
We guarantee this new car for 5 years
n. (c.)Countable NounA promise to repair a broken product
There is a five year guarantee on this car, if anything breaks, they will fix it for free
v.t.Transitive VerbTo promise that something will happen or be done
I guarantee that these bonds are risk-free or I will refund your money
n. (c.)Countable NounPromise that something will be done as expected
Their guarantee makes me feel better about investing with them
v.t.Transitive VerbTo promise to pay if another person fails to do so
I guarantee to pay you next week
n. (c.)Countable NounA thing serving as a security.
They demanded guarantees of political freedom.
v.t.Transitive VerbTo secure or protect (a right or opportunity).
The bill of rights guarantees certain freedoms.