The definition of a guaranty is a promise or written agreement to do something.
(noun)An example of a guaranty is a written statement by an electronics store that they have the best price available on a television; a price guaranty.
See guaranty in Webster's New World College Dictionary
noun pl. guaranties
Origin: OFr garantie < garantir, to guarantee < garant, warant, a warrant, supporter < Frank *warand, prp. of *warjan, to verify (akin to OHG werēn < wār, true < IE *weros, true > L verus), infl. also by *warjan, to defend, akin to OE werian: see weir
transitive verb guarantied, guarantying
See guaranty in American Heritage Dictionary 4
noun pl. guar·an·ties
Origin:
Origin: Anglo-Norman guarantie
Origin: , from Old French
Origin: , from garant, guarant, warrant
Origin: , of Germanic origin; see wer-4 in Indo-European roots
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