world federalist

noun
  1. a promoter or supporter of world federalism.
  2. (initial capital letters) a member of a movement, active since 1947, proposing a world government on a federal basis, having powers of maintaining order and peace among the nations.

Origin of world federalist

First recorded in 1950–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018