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Latin foedus
English foedus rerum (link)
French fédérale (link)
Proto-Germanic *bīdaną (mention)
Proto-Indo-European *bʰeydʰ- (root)
Proto-Indo-European *bʰeydʰ- (derived)
Proto-Indo-European *bʰeyh₂- (derived)
Proto-Italic *foiðos (derived)
Latin fīdō (mention)
Latin fidēs (mention)
Latin fīdus (mention)
Latin confoedustus (link)
Latin foederātus (link)
Latin foederō (link)
Latin foedifragus (link)
Latin foeditās (link)
Latin foedo (link)

English bever (cognate)
English federal (mention)
English casus foederis (mention)
English foederatus (mention)
English defedation (mention)
Asturian feu (inherited)
Welsh baedd (cognate)
Danish føderal (derived)
Spanish feo (derived)
Galician feo (inherited)
Ancient Greek πίθηκος (cognate)
Hungarian föderáció (derived)
Indonesian federal (mention)
Italian federazione (mention)
Italian confederare (cognate)
Italian federato (mention)
Italian fedo (derived)
Italian fedare (mention)
Kazakh федерализм (derived)
Latin foedo (mention)
Latin foeditas (affix)
Latin foedifragus (affix)
Latin confoedero (affix)
Latvian bīties (cognate)
Norwegian Bokmål føderal (derived)
Norwegian Bokmål føderasjon (derived)
Norwegian Nynorsk føderal (derived)
Norwegian Nynorsk føderasjon (derived)
Portuguese feio (mention)
Sardinian feu (derived)
Albanian be (cognate)