be lost for words
US /bi lɔst fɔr wɜrdz/
UK /bi lɔst fɔr wɜrdz/

1.
sprakeloos zijn, geen woorden hebben
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.
Toen ze het verrassingsfeest zag, was ze volledig sprakeloos.
•
His rude comment left me lost for words.
Zijn onbeschofte opmerking liet me sprakeloos achter.