delirium
Delirium (noun) means a sudden state of confusion, disorientation, and sometimes hallucination, often caused by illness, fever, or drugs. Example: “The patient slipped into delirium after a severe infection.”
How to use delirium
Learner’s notesIn plain EnglishA confused, disoriented mental state caused by illness, or (more loosely) wild excitement.
Word forms
- Plural
- deliriums, deliria
Fill the gap
Can you complete this real example?
The patient slipped into _____ after a severe infection.
Etymology
From Latin delirium, "madness" or "derangement," related to delirare, "to go off the furrow" — literally, to stray off track while plowing.