aboriginal
‘indigenous tribes; referring to the earliest inhabitant’
Lexical development traced from the Tamil root:
E. aboriginall < Lat. aborigines ‘the first inhabitants of Latium’, ‘the first ancestors of the Romans’ < Lat. ab origine ‘from the beginning’ < ab ‘off, away’ + origo ‘a rise, commencement, beginning, source; descent, lineage, birth,’ < oriri ‘arise, rise; be born, be descended, receive life’ < uhri < heri- < Tamil el