n. pl. guar·an·ties
1. A promise to be answerable for the debt or obligation of another in the event of nonpayment or nonperformance.
a. Something given as security for the execution, completion, or existence of something else.
b. The act of providing such security.
a. A guarantee, as for a product or service: a new refrigerator still under guaranty.
b. A guarantee to perform something in a specified way.
4. A guarantee serving to assure a particular outcome or condition.
5. A guarantor.
tr.v. guar·an·tied, guar·an·ty·ing, guar·an·ties
1. To provide a guaranty for.
2. To guarantee.
[Anglo-Norman guarantie, from Old French, from garant, guarant, warrant, of Germanic origin; see wer-4 in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.