filius

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Latin[edit]

Etymology[edit]

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

Pronunciation[edit]

Noun[edit]

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[edit]

Second declension, nominative singular in -ius.

Number Singular Plural
nominative fīlius fīliī
genitive fīliī1,
fīlī
fīliōrum
dative fīliō fīliīs
accusative fīlium fīliōs
ablative fīliō fīliīs
vocative fīlī fīliī

1In later Latin.

Note: Also vocative singular filie did appear.

Synonyms[edit]

Derived terms[edit]

Related terms[edit]

Descendants[edit]