Definition of "internationalist"

internationalist

adjective
comparative more internationalist, superlative most internationalist
1. Of or pertaining to internationalism.
noun
plural internationalists
1. An advocate of internationalism.
2. A proponent of proletarian internationalism.
  Quotations
  I'm sure Hitler has more than a few enemies even in Germany. Germany too has its internationalists and its revolutionary workers.
  2019, Vasily Grossman, translated by Robert Chandler and Yury Bit-Yunan, Stalingrad, page 55
3. (chiefly Scotland) A player representing their country in a team sport.