失败的名词形式英语是failure.
failure：
n.失败;失败的人(或事物);未做，未履行(应做之事)。
复数： failures
扩展资料
The success or failure of the plan depends on you.
这项计划的成败取决于你。
The cause of the crash was given as engine failure.
撞车事故的原因被认定是发动机故障。
It soon became clear that the programme was a failure.
没多久便可清楚地看出，这个节目不受欢迎。
The word failure is not in his vocabulary.
在他的词典中没有“失败”这个词。
She felt that her failure would bring shame on her family.
她觉得她的失败会使家人蒙羞。
