次開央不圓唇元音是最常見的次開央元音,因此通常簡寫為⟨ɐ⟩(即與次開央元音的符號相同),本文中亦依照此慣例。若要強調其不圓唇的性質,另有幾個方法可以表示此音:
- 將次開央元音加上更不圓唇的變音記號,如⟨ɐ̜⟩
- 將半開央不圓唇元音加上較低的變音記號,如:⟨ɜ̞⟩
- 將次開前不圓唇元音加上央化的變音記號,如:⟨æ̈⟩
- 將開前不圓唇元音或開後不圓唇元音加上中央化的變音符號,分別如:⟨a̽⟩ 與 ⟨ɑ̽⟩。
- 將開前不圓唇元音或開後不圓唇元音同時加上較高與中央化的符號,分別如:⟨ä̝⟩ 與 ⟨ɑ̝̈⟩。
在孟加拉語、廣州話與賽普勒斯希臘語等語言中,這個元音是唯一的開元音,而非在其他語言中更常見的開央不圓唇元音。
- 其圓唇度為不圓唇元音,嘴唇自然放鬆,不特別向前突起。
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