Where does “-ãa” come from?

-ãa (Old Portuguese) comes from Latin -ana, from Latin -anus, from Latin -um, from Proto-Italic *-om, from Proto-Indo-European *-oHom.

Ancestry of “-ãa”, step by step

StepLanguageWordMeaning
1Latin-anainflection of -ānus: ## nominative/vocative...
2Latin-anusOf or pertaining to; -ian
3Latin-umnominative neuter singular of -us; accusative...
4Proto-Italic*-om—
5Proto-Indo-European*-oHom—

Words derived from “-ãa”

Every word from Proto-Indo-European *-oHom →Every word from Latin -ana →Every word from Latin -um →