Where does “aboriginary” come from?

aboriginary (English) comes from English Aborigine, from English Aborigines, from Latin Aborīginēs, from Latin orīgō, from Latin -igo, from Proto-Italic agō, from Proto-Indo-European h₂éǵeti, from Proto-Indo-European h₂eǵ- — to drive.

Ancestry of “aboriginary”, step by step

StepLanguageWordMeaning
1EnglishAborigineAn Aboriginal person from Australia (descending from, or a member of, one of the indigenous people(s) before British colonisation), Aboriginal Australian
2EnglishAboriginesplural of Aborigine
3LatinAborīginēsaborigines (original inhabitants)
4Latinorīgōcommencement act, event or process of coming into existence: beginning, origination
5Latin-igoEnlargement of -ō; Suffixed to nouns and to...
6Proto-Italicagōdrive; push, impel; do, act
7Proto-Indo-Europeanh₂éǵetito be driving
8Proto-Indo-Europeanh₂eǵ-to drive
Every word from Proto-Indo-European h₂eǵ-