guarantee [ˌɡærənˈtiː] ?
noun
verb:transitive
(Comm) [+goods] garantizar;against contra; (ensure) [+service, delivery] asegurar; (make o.s. responsible for) [+debt] ser fiador de guaranteed for three months garantizado durante tres meses; I guarantee that ... les garantizo que ...; I can't guarantee good weather no respondo del tiempo; he can't guarantee that he'll come no está seguro de poder venir
