당혹스러워요 · 당혹스러웠어요 · 당혹스러운 (+noun) (ㅂ irregular)
embarrassed, perplexed, bewildered
Example
갑자기 어려운 질문을 받아서 당혹스러웠어요.
I was suddenly asked a hard question, so I felt flustered.
Word parts
당 face+혹 confused
Literally 'facing confusion'; -스럽다 means 'feeling like'.