Delirium

Webster's Practical Dictionary- A Practical Dictionary of the Englih Language · 1884 · p. 111

de-lir'i-um, n. (Med.) A state in which one's ideas are wild, irregular, and unconnected; mental aberration. Strong excitement; wild enthusiasm; madne . — Delir'ious, -I-us, a. Suffering from, etc.; wandering in mind; insane.