Came here to say the same thing. Plus add this link in support [1]. [1] https://www.abc.net.au/news/2016-09-23/origin-of-word-donga-ongoing-mystery-to-linguist

Came here to say the same thing. Plus add this link in support [1]. [1] https://www.abc.net.au/news/2016-09-23/origin-of-word-donga-ongoing-mystery-to-linguists/7871488 https://www.abc.net.au/news/2016-09-23/origin-of-word-donga-...