“失身份”常见的英文表达有 “lose one's dignity” 或 “be beneath one's dignity” 。
lose one's dignity：侧重于描述失去尊严、体面，导致身份感降低 。例如：He would never lose his dignity by begging in public.（他绝不会在公共场合乞讨而失了身份。 ）
be beneath one's dignity：意思是某事或某种行为低于一个人的身份、有失体面。例如：It would be beneath my dignity to accept such a small salary.（接受这么低的薪水会有失我的身份。 ）