口啞啞 (hau2 aa2 aa2) — tongue-tied; speechless; silent in Cantonese
hauˊ²口aaˊ²啞aaˊ²啞简 口哑哑
Mandarin Pinyin: kou3 ya3 ya3
Meaning of 口啞啞
nountongue-tied; speechless; silent
noundescribes a situation where a person is being questioned until the extent when he or she can't answer any further; to be tongue-tied