nicknaming

from The Collaborative International Dictionary of English v.0.48

Nickname \Nick"name`\, v. t. [imp. & p. p. {Nicknamed}; p. pr. &
   vb. n. {Nicknaming}.]
   To give a nickname to; to call by a nickname.
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         You nickname virtue; vice you should have spoke.
                                                  --Shak.
   [1913 Webster]

         I altogether disclaim what has been nicknamed the
         doctrine of finality.                    --Macaulay.
   [1913 Webster]