How to unarchive some archived attributes

One answer

If you use Web/Eclipse client, under Type and Attribute > Attribute, click on Add and select [Reuse Existing Attribute],
you should be able to see the list of archived attributes and you can add them back.
you should be able to see the list of archived attributes and you can add them back.
Comments

Actually we have deleted the attribute and not archived it,so I amn't able to search for the attribute in the Reuse Existing Attribute section. Is there any way I can view and get back my already deleted attribute?

How did you delete the attribute? Currently even though you remove the attributes from the view, it is actually archived not deleted.