动 degrade，demote，reduce，devalue ；

[例句] 她是个自尊心很强的人，绝不会自贬身份去写匿名信。 She's got too much dignity to descend to writing anonymous letters.

[例句] 他们需要提升自己的形象——他们是在自贬身价。 They need to improve their image — they are selling themselves short.