diplomatist

from WordNet (r) 3.0 (2006)

diplomatist
    n 1: an official engaged in international negotiations [syn:
         {diplomat}, {diplomatist}]

from The Collaborative International Dictionary of English v.0.48

Diplomatist \Di*plo"ma*tist\, n. [Cf. F. diplomatiste a student
   of diplomatics.]
   A person employed in, or skilled in, diplomacy; a diplomat.
   [1913 Webster]

         In ability, Avaux had no superior among the numerous
         able diplomatists whom his country then possessed.
                                                  --Macaulay.
   Diplopia