「口啞啞」

(pos:形容詞)
<explanation>
yue:形容人冇咗反駁或者回答嘅能力
eng:to be rendered speechless; to be reduced to silence
<eg>
yue:佢面試冇準備到，所以俾人問到口啞啞。 (keoi5 min6 si5 mou5 zeon2 bei6 dou3, so2 ji5 bei2 jan4 man6 dou3 hau2 aa2 aa2.)
eng:He wasn't prepared for the interview, so he wasn't able to answer any of the questions.