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Latin filius
Old English delu (cognate)
Old English dēon (mention)
English doe (mention)
Proto-Indo-European *dʰeh₁(y)- (root)
Proto-Indo-European *dʰeh₁ylios (inherited)
Proto-Indo-European *dʰeh₁(y)- (mention)
Proto-Italic *feiljos (inherited)
Latin fēmina (mention)
Latin fellō (mention)
Latin fētus (mention)
Old Armenian դալ (cognate)
Faliscan fileo (cognate)

English affiliate (mention)
English filial (mention)
English affiliation (mention)
English filicide (mention)
English nullius filius (mention)
English Fibonacci (derived)
English filiety (mention)
English defiliation (mention)
Aragonese fillo (inherited)
Asturian afiar (mention)
Corsican figliu (inherited)
Esperanto filo (mention)
Spanish ahijar (mention)
Spanish feligrés (inherited)
French fils (inherited)
French fieu (derived)
French affilier (mention)
Middle French filz (derived)
Indonesian afiliasi (mention)
Latin filiaster (suffix)
Luxembourgish Fils (derived)
Lombard fiö (inherited)
Latvian dēls (mention)
Norman fieu (inherited)
Old Spanish fijo (inherited)
Picard fiu (inherited)
Portuguese afilhado (mention)
Bourguignon fi (inherited)
Tagalog iho (derived)
Venetian fìo (inherited)
Old Armenian դալ (cognate)
Faliscan 𐌚𐌉𐌋𐌄𐌏 (cognate)