failure [ˈfeɪljəɼ] noun 1. [lack of success, unsuccessful thing] fracaso m 2. [person] fracasado m, fracasada f 3. [in exam] suspenso m 4. [act of neglecting] her failure to do it el que no lo hiciera 5. [breakdown, malfunction] avería f, fallo m 6. [of nerve, courage etc] pérdida f