filius etymology

Latin word filius comes from Proto-Indo-European *dʰeh₁(y)-, Latin felicem, and later Proto-Italic *feiljos (Son.)

Detailed word origin of filius

Dictionary entryLanguageDefinition
*dʰeh₁(y)- Proto-Indo-European (ine-pro) to suck, to suck, suckle
felicem Latin (lat)
*dʰeh₁y-li-os Proto-Indo-European (ine-pro) sucker
*dʰeh₁ylios Proto-Indo-European (ine-pro)
*feiljos Proto-Italic (itc-pro) Son.
fīlios Old Latin (itc-ola)
filius Latin (lat) (by extension) any male descendant. (in the plural) children. A son.