Definition

I don't know what to say!: I'm speechless! I just can't find the words to utter! I'm at a loss for words! idiom
  • "Thank you so much! I don't know what to say!"
  • "I, I, I don't know what to say!"
  • "It's a miracle! I don't know what to say."
  • "I just don't know what to say."
  • "I don't know what to say... I know!"

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