filius

Latin

Etymology

From Old Latin fīlios, from Proto-Indo-European *dʰeh₁y-li-os ‎(“sucker”) (compare Faliscan hileo ‎(“son”)), a derivation from the verbal root *dʰeh₁(y)- ‎(“to suck”). Related to fēmina, fellō, fētus, Old English delu ‎(“nipple, teat”), dēon ‎(“to suck, suckle”), Old Armenian դալ ‎(dal). More at doe.

Pronunciation

• (Classical) IPA^(key): /ˈfiː.li.us/

• Audio (Classical)

  (file)

Noun

fīlius m ‎(genitive fīliī); second declension

1. a son

   Ubi est noster filius?

   Where is our son?

2. (by extension) any male descendant
3. (in the plural) children

Inflection

Second declension.

Case	Singular	Plural
nominative	fīlius	fīliī
genitive	fīliī fīlī1	fīliōrum
dative	fīliō	fīliīs
accusative	fīlium	fīliōs
ablative	fīliō	fīliīs
vocative	fīlī	fīliī

¹Found in older Latin (until the Augustan Age).

Note: Also vocative singular filie did appear.

Synonyms

• natus

Derived terms

• affiliare
• affiliatio
• fīlia
• fīliolus
• prōfīlius (Mediaeval Latin)

Related terms

• fīliālis
• fīliaster
• fīliastra
• fīlietās
• fīliola

Descendants

Descendants

edit Corsican: figliu Dalmatian: felj Emilian: fiôl Esperanto: filo Ido: filio Interlingua: filio Istriot: feîo, fèio Italian: figlio Mozarabic: filyo Navarro-Aragonese: Aragonese: fillo Novial: filio Old French: fil, fis, fix, fiz English: Fitz- French: fils Norman: fils Old Leonese: Asturian: fíu Leonese: fiyu Mirandese: filho Old Portuguese: fillo Fala: fillu Galician: fillo Portuguese: filho Indo-Portuguese: filh Kabuverdianu: fidju Old Provençal: filh Catalan: fill Occitan: filh Old Spanish: fijo Extremaduran: iju Ladino: ijo / איז׳ו Spanish: hijo Papiamentu: yiu Tagalog: iho Proto-Romanian: Aromanian: hilj, hiljiu Istro-Romanian: fiľ Megleno-Romanian: il'u Romanian: fiu Rhaeto-Romance: Friulian: fi Romansch: figl, fegl Sardinian: Campidanese: fillu Logudorese: fizu, figiu Sicilian: figghiu Venetian: fio, fiol

References

• filius in Charlton T. Lewis & Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• filius in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• FILIUS in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• filius in Félix Gaffiot (1934), Dictionnaire Illustré Latin-Français, Paris: Hachette.