Vocative singular is fili
Vocative plural is filii
The vocative is the same as the nominative, but when a noun ends in "ius", that piece is replaced with "i". The vocative plural remains the same as the nominative plural.
Singularnominative/vocative: filiagenitive: filiaedative: filiaeaccusative: filiamablative: filiaPluralnominative/vocative: filiaegenitive: filiarumdative: filiabusaccusative: filiasablative: filiabusThe forms of the dative and ablative plural end in -abus,rather than the usual -is, in order to distinguish them for the corresponding cases of the word filius.
filius
Filium is the objective case of the Latin word filius which means "son".
'Filial' is a word has its root in Latin. . The Latin for 'Son ' is Filius The Latin for 'Daughter' is Filias.
Accusative singular of 'filius,' meaning 'son.'
Filius.
filius
Filius
Meus filius
Filius oblitus.
Nullius Filius
filius est