合 ㄏㄜ ˊ hé 不 ㄅㄨ ˋ bù 拢 ㄌㄨㄥ ˇ lǒng 嘴 ㄗㄨㄟ ˇ zuǐ 合 ㄏㄜ ˊ hé 不 ㄅㄨ ˋ bù 攏 ㄌㄨㄥ ˇ lǒng 嘴 ㄗㄨㄟ ˇ zuǐ unable to conceal one's happiness, amazement, shock etc grinning from ear to ear mouth agape gobsmacked