pro-federalist

Etymology tree
Proto-Indo-European *per-der.?
Proto-Indo-European *per-der.?
Proto-Indo-European *pér
Proto-Indo-European *-o
Proto-Indo-European *próder.
Proto-Italic *prō
Latin prōder.
English pro-
Proto-Indo-European *bʰeydʰ-
Proto-Indo-European *-ós
Proto-Indo-European *bʰeydʰós
Proto-Italic *feiðos
Latin foedusder.
French fédéralder.
English federal
Proto-Indo-European *-id-
Proto-Indo-European *-yéti
Proto-Indo-European *-idyéti
Proto-Hellenic *-íďďō
Ancient Greek -ῐ́ζω (-ĭ́zō)
Proto-Hellenic *-tās
Ancient Greek -τής (-tḗs)
Ancient Greek -ῐστής (-ĭstḗs)bor.
Latin -istader.
Old French -istebor.
Middle English -ist
English -ist
English federalist
English pro-federalist
From pro- + federalist.