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!
- "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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