Thomas Jefferson came over to Paris as plenipotentiary in his stead.
"Bismarck is my tool, my plenipotentiary," he declared to his friends.
And my uncle was there in his official capacity as a a plenipotentiary.
He was the plenipotentiary of a powerful religious order—no matter.
As a plenipotentiary extraordinary I admit I'm a teetotal failure.
The archduke, however, was very indulgent to his plenipotentiary.
He was a plenipotentiary on the occasion of the second Treaty of Paris in 1815.
A British plenipotentiary 'advised' the re-established Tewfik.
The Sheikhs word must not be broken, concluded the plenipotentiary.
He felt as proud of his commission as if Her Majesty had made him a plenipotentiary.