be lost for words

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

être sans voix, perdre ses mots

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.
Quand elle a vu la fête surprise, elle était complètement sans voix.
His rude comment left me lost for words.
Son commentaire impoli m'a laissé sans voix.