ambassador-at-large
noun
an ambassador who is not assigned to a particular diplomatic post but is appointed on a special mission.
The grammatical form denoting more than one person, place, thing, or idea.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"We ambassadors-at-large are each assigned an unexplored section of space," the alien said.
From Diplomatic Immunity by Robert Sheckley