唉
āi
(interjection) sigh; alas
Every meaning
āi
- (interjection) sigh; alas
- (interjection) yes; yeah (response)
ài
- (interjection) oh; ah (sadness or regret)
Meanings are from Mandarin The Wild’s own dictionary. Levels follow the official HSK word list (the exam’s 2025 syllabus, levels 7–9 shown together).