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Delirious

/dɪˈlɪriəs/
B1
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(adj) Being in the state of delirium.

My little brother gets delirious when he's sleepy. He says the weirdest things.
He seems delirious with a high fever.
CEFR Practice Quiz
My little brother gets ____ when he's sleepy. He says the weirdest things.

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