A guaranty is usually an offer contemplating a unilateral contract in that it requires for acceptance an act or series of acts, or abstention from action, on the part of the offeree. The act or acts ordinarily consist in the furnishing of money, goods, services, or the like, by the offeree to the principal in reliance on the guaranty; or in the assumption of suretyship risk by the offeree on behalf of the principal. Abstention from action commonly consists in the offeree's refraining from pressing the principal by suit or otherwise for an overdue debt.
Morton C. Campbell,
THE NOTICE DUE TO A GUARANTOR,
Mich. L. Rev.
Available at: https://repository.law.umich.edu/mlr/vol35/iss4/2