\Guar`an*tee"\, n.; pl. {Guarantees}. [For guaranty,
prob. influenced by words like assignee, lessee, etc. See
{Guaranty}, and cf. {Warrantee}.]
1. 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.
         His interest seemed to be a guarantee for his zeal.
                                               --Macaulay.
2. One who binds himself to see an undertaking of another
   performed; a guarantor. --South.
Note: Guarantor is the correct form in this sense.
3. (Law) The person to whom a guaranty is made; -- the
   correlative of guarantor.
Syn: {Guarantee}, {Warranty.}
Usage: A guarantee is an engagement that a certain act will
       be done or not done in future. A warranty is an
       engagement as to the qualities or title of a thing at
       the time of the engagement.

\Guar"an*tee`\, v. t. [imp. & p. p. {guaranteed}; p,
pr. & vb. n. {Guaranteeing}.] [From {Guarantee}, n.]
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.
      The United States shall guarantee to every State in
      this Union a republican form of government.
                                               --Constitution
                                               of the U. S.