哦 On the HSK 7-9 vocabulary list, at CEFR level C2. é ㄜˊ to chant ó ㄛˊ oh (interjection indicating doubt or surprise) ò ㄛˋ oh (interjection indicating that one has just learned sth) o ˙ㄛ sentence-final particle that conveys informality, warmth, friendliness or intimacy may also indicate that one is stating a fact that the other person is not aware of Where 哦 is used Example sentences and grammar articles using 哦 Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0 国际中文教育中文水平等级标准, 中华人民共和国教育部, MIT