guarantying

Noun

guaranty (plural guaranties)

1. An undertaking to answer for the payment of some debt, or the performance of some contract or duty, of another, in case of the failure of such other to pay or perform; a warranty; a security.
2. Something serving as a security for such an undertaking.
   • No doubt the city of New York and the State of California contain capital enough for the completion of the entire road,--would subscribe to it, too, upon sufficient guaranties.1864, Various, The Atlantic Monthly, Volume 14, No. 85, November, 1864
3. An assurance or guarantee.
   • ...He had contemplated the match as the fittest for the heir to England's throne, and one that offered the best guaranty for mutual happiness and a vigorous progeniture.1886, James Parton, “King and Queen of Denmark”, in Some Noted Princes, Authors, and Statesmen of Our Time