目怔口呆

mù zhēng kǒu dāi

lit. eye startled, mouth struck dumb (idiom); stunned

stupefied

目

mù

eye

怔

zhēng

(bound form) startled; terrified; panic-stricken

口

kǒu

mouth

呆

dāi

foolish; stupid (variant of 呆[dai1])