1. guarantee - Noun
2. guarantee - Verb
In law and common usage: A promise to answer for the payment of some debt, or the performance of some duty, in case of the failure of another person, who is, in the first instance, liable to such payment or performance; an engagement which secures or insures another against a contingency; a warranty; a security. Same as Guaranty.
One who binds himself to see an undertaking of another performed; a guarantor.
The person to whom a guaranty is made; -- the correlative of guarantor.
In law and common usage: to undertake or engage for the payment of (a debt) or the performance of (a duty) by another person; to undertake to secure (a possession, right, claim, etc.) to another against a specified contingency, or at all avents; to give a guarantee concerning; to engage, assure, or secure as a thing that may be depended on; to warrant; as, to guarantee the execution of a treaty.
Source: Webster's dictionaryThis nest egg will ensure a nice retirement for us Source: Internet
Preparation will guarantee success! Source: Internet
there is no guarantee that they are not lying Source: Internet
guarantee to free the prisoners Source: Internet
I vouch for the quality of my products Source: Internet
The dealer warrants all the cars he sells Source: Internet