1. Temporary mental disturbance: A state marked by extreme restlessness, confusion, and sometimes hallucinations, caused by fever, poisoning, or brain injury.
2. Great excitement: A state of extreme excitement or emotion.
Delirium of joy.
(It's pretty much the same as dilirious.)
by Jafje April 03, 2007
A hard song in the video game In The Groove, rated as 12 blocks on expert. The composer is Smiley, a pseudonym of Kyle Ward, the main music composer of the In The Groove series. The stepchart features many 16th note runs near the end of the song. The BPM is 163, though it briefly increases to 279.5 during the middle of the song.
Those 16th note runs near the end of Delirium killed me!
by JasonMath October 18, 2006