Gobsmacked
ipi tʌq pʌɾʌdʑin aɪpiːaɪ tiːtɪɒk beɪɔːɹɪɒdʒɪn lɪtəɹəli maʊθ dɹɒpt əʊpən plʌsmʌŋhɐn mɪɒŋhən stʌnd
In Korean 입이 떡 벌어진 (ip-i tteok beoreojin) - (literally: mouth dropped open) + 멍한 (meonghan) - stunned.
Utterly astonished; astounded.
Example
"I was gobsmacked when I heard the news."
