Толковый словарь английского языка - guarantee

I. noun Etymology: probably alteration of 1guaranty Date: 1680 guarantor, guaranty 1, an assurance for the fulfillment of a condition: as, an agreement by which one person undertakes to secure another in the possession or enjoyment of something, an assurance of the quality of or of the length of use to be expected from a product offered for sale often with a promise of reimbursement, guaranty 4, II. transitive verb (-teed; -teeing) Date: 1731 to undertake to answer for the debt, default, or miscarriage of , to engage for the existence, permanence, or nature of ; undertake to do or secure , to give security to , to assert confidently