expansionist

adj

1. Of or pertaining to expansionism.

   “Unlike passenger demand forecasts in England, that have resulted in the removal of 20% of service capacity in the May 2022 timetable, Welsh Ministers acting through the TfW agency are continuing an expansionist agenda for rail services under their control.”

   “Lindberg says that current phenomena are reminiscent of the 1930s, right before the expansionist ambitions of Nazi Germany and Imperial Japan sparked a world war.”

noun

1. An advocate of expansionism.

   “Mr. Miller argues convincingly that a majority of Americans shared the romantic nationalism of such expansionists as Theodore Roosevelt and Sen. Albert Beveridge and participated vicariously in their dreams of martial glory and expanding markets.”