Definition of federationist in US English:

federationist

noun

  • See federation

    • ‘Following the defeat of the Spanish, centralist and federationist groups waged a lengthy conflict between themselves to determine the future of the nation.’
    • ‘In 1897-98, the Constitution's framers, all committed federationists (the majority directly elected by the colonies' voters), spent close to a total of four months in meetings around the country, spread out over a full year.’
    • ‘Certainly federationists advanced this argument, but when the Federation League used it to solicit funds from Sydney businesses the results were very disappointing.’

Pronunciation

federationist

/-ist/