1. the quality or state of being delirious; a condition of mental confusion, hallucination, or incoherence, typically caused by fever, intoxication, or severe illness
Usage: uncountable noun; medical/clinical context

Examples

• The patient's deliriousness subsided once the fever broke.
• High temperatures can cause deliriousness in young children.
• The deliriousness of his speech made it clear he needed immediate medical attention.
• She drifted in and out of deliriousness during her illness.
• The doctor monitored the patient for signs of deliriousness.
• His deliriousness lasted for three days before he regained full consciousness.