1 (defect) (in character) defecto (m); (in manufacture) defecto (m); falla (f); (LAm) (in supply, machine) avería (f)
with all his faults con todos sus defectos; her fault is excessive shyness peca de tímida; generous to a fault excesivamente generoso; to find fault poner reparos; to find fault with sth/sb criticar algo/a algn
2 (blame, responsibility) culpa (f)
it's all your fault tú tienes toda la culpa; it's not my fault no es culpa mía; you were at fault in not telling us hiciste mal en no decírnoslo; your memory is at fault no te acuerdas bien; you were not at fault no por culpa suya; through no fault of his own sin falta alguna de su parte; whose fault is it (if ...)? ¿quién tiene la culpa (si ...)?