English
federationist
From federation + -ist.
Formed from federation + -ist
Proto-Indo-European *bʰeydʰ- ‘to trust’
…
Latin foedus
Latin foederō ‘to seal or ratify an agreement or treaty’
Late Latin foederatio ‘federation, treaty’
French fédération
English federation
Today it means
noun An advocate of federationism.
Language periods are conventional ranges, not dates for this word.
Etymograph / federationist