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guarantor

[gar-uh n-tawr, -ter]
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noun
  1. a person, group, system, etc., that guarantees.
  2. a person who makes or gives a guarantee, guaranty, warrant, etc.

Origin of guarantor

First recorded in 1850–55; guarant(ee) + -or2
Related formspre·guar·an·tor, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for guarantor

guarantor

noun
  1. a person who gives or is bound by a guarantee or guaranty; surety
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for guarantor

n.

1853, from guarantee with Latinate agent noun suffix -or substituted for -ee.

Online Etymology Dictionary, © 2010 Douglas Harper