詐戇 [诈戆]

Jyutping zaa3 ngong6
Pinyin zhà gàng

Definitions (粵典–words.hk)

動詞
詐傻扮懵
to act stupid; to play dumb

Definitions (Kaifangcidian)

裝傻 – 装傻

詐戇 [诈戆]

Jyutping zaa3 ngong6
Pinyin zhà zhuàng

Definitions (CC-CANTO)

to pretend to be stupid