Where does “yoku” come from?

yoku (Central Dusun) comes from Proto-Malayo-Polynesian (i-)aku, from Proto-Austronesian (i-)aku — I; me; my.

Ancestry of “yoku”, step by step

StepLanguageWordMeaning
1Proto-Malayo-Polynesian(i-)akuI; me; my
2Proto-Austronesian(i-)akuI; me; my
Every word from Proto-Austronesian (i-)aku →Every word from Proto-Malayo-Polynesian (i-)aku →
yoku — Etymology, Origin & Word History | Etymology Explorer