be lost for words

US /bi lɔst fɔr wɜrdz/
UK /bi lɔst fɔr wɜrdz/
"be lost for words" picture
1.

말문이 막히다, 할 말을 잃다

to be so surprised, confused, or emotional that you cannot think of anything to say

:
When she saw the surprise party, she was completely lost for words.
그녀는 깜짝 파티를 보고 완전히 말문이 막혔다.
His rude comment left me lost for words.
그의 무례한 말에 나는 말문이 막혔다.