[3] With fewer than 10 native speakers and an ethnic population of 400 people, Saaroa is considered critically endangered.

Even among native speakers of the language, they use primarily Mandarin or Bunun in their daily lives.

[5] The Tsouic group used to occupy a fairly large area in the southwestern parts of central Taiwan.

Due to the invasion of other communities and contagious diseases, it shrank to the relatively small areas as today.

[7] There are also plenty of loan words in Saaroa, many of which were introduced during the Imperial Japanese Era (1895–1945).

Apart from Japanese, words were borrowed from Mandarin Chinese, Taiwanese southern Min, and other aboriginal languages in the neighboring area, e.g. Bunun.

In the past, Roman script was employed in the previous writing materials of Saaroa.

Underived roots carry the basic meaning of words typically consist of more than two syllables, in a (C)V.(C)V.(C)V pattern.

The irrealis Actor Voice verb muacekehle 'will return' appears before the Subject argument kana'ana '(s)he'.