yaya

Another origin of ya

1. Proto-Germanicc. 500 BCE–200 CE*ja‘yes’uncertain
2. Old High Germanc. 750–1050ja‘yes’uncertain
3. Middle High Germanc. 1050–1350jauncertain
4. Germanc. 1650–presentja‘obviously’uncertain
5. Englishtodayya

Apparently from German ja and cognates in other Germanic languages; related to English yeah.

Another origin of ya

1. Proto-Germanicc. 500 BCE–200 CE*ja‘yes’reconstructed
2. Proto-West Germanicc. 200–500 CE*jā‘yes’reconstructed
3. Old Englishc. 450–1150ġēa‘yea, yes’
4. Middle Englishc. 1150–1500ya
5. Englishtodayya

Another origin of ya

1. Russianmodernяja
2. Englishtodayya

Another origin of ya

1. Proto-Germanicc. 500 BCE–200 CE*ja‘yes’reconstructed
2. Old Dutchc. 500–1150*jāreconstructed
3. Middle Dutchc. 1150–1500ja
4. Dutchc. 1500–presentja‘used as a request for someone to repeat something not heard or understood clearly’
5. Malaymodernya‘used to express affirmation’
6. Englishtodayya

Reinforced by informal variants of yes in English (e.g., yeah).