Where does “Aeneis” come from?

Aeneis (Dutch) comes from Latin Aeneis, from Latin Aenēas, from Latin -is, from Latin -a, from Proto-Italic -ā, from Proto-Indo-European -éh₂.

Ancestry of “Aeneis”, step by step

StepLanguageWordMeaning
1LatinAeneis—
2LatinAenēas—
3Latin-issuffixed to the root of nouns in composition,...
4Latin-asuffixed to the roots of verbs, forms agent...
5Proto-Italic-āForms masculine agent nouns from prefixed or compounded bases
6Proto-Indo-European-éh₂—
Every word from Proto-Indo-European -éh₂ →Every word from Latin -is →Every word from Latin -a →