Where does “aroarorua” come from?

aroarorua (Maori) comes from Maori rua, from Proto-Eastern Polynesian rua, from Proto-Nuclear Polynesian rua, from Proto-Polynesian rua, from Proto-Oceanic rua, from Proto-Eastern Malayo-Polynesian duha, from Proto-Central-Eastern Malayo-Polynesian duha, from Proto-Malayo-Polynesian duha — two.

Ancestry of “aroarorua”, step by step

aroarorua traces back through two separate lines of ancestry.

via Maori rua

StepLanguageWordMeaning
1Maoriruatwo; pit; cavity
2Proto-Eastern Polynesianrua
3Proto-Nuclear Polynesianrua
4Proto-Polynesianruatwo
5Proto-Oceanicruatwo
6Proto-Eastern Malayo-Polynesianduha
7Proto-Central-Eastern Malayo-Polynesianduha
8Proto-Malayo-Polynesianduhatwo
9Proto-Austronesian*duha
10Proto-AustronesianduSatwo

via Maori aro

StepLanguageWordMeaning
1Maoriarofront; to turn toward something or someone
2Proto-Polynesianqarofront
3Proto-Oceanicqaropfront
4Proto-Malayo-Polynesianqadəpfront
Every word from Proto-Austronesian duSa