Bedeutung von “guarantee” im Essential American English Dictionary

guarantee

verb us /ˌɡær·ənˈti/ present participle guaranteeing, past tense and past participle guaranteed

to promise that something is true or will happen:

We can’t guarantee that it will arrive in time.

If a company guarantees a product, it promises to repair it or give you a new one if it has a fault:

The TV is guaranteed for twelve months.

(Definition von “guarantee verb” aus dem Webster's Essential Mini Dictionary © Cambridge University Press)