delirium

delirium is a Noun

Definition:

[1] A state in which the thoughts, expressions, and actions are wild, irregular, and incoherent; mental aberration; a roving or wandering of the mind, -- usually dependent on a fever or some other disease, and so distinguished from mania, or madness.

[2] Strong excitement; wild enthusiasm; madness. The popular delirium [of the French Revolution] at first caught his enthusiastic mind. W. Irving. The delirium of the preceding session (of Parliament). Motley. Delirium tremens (. Etym: [L., trembling delirium] (Med.), a violent delirium induced by the excessive and prolonged use of intoxicating liquors. -- Traumatic delirium (Med.), a variety of delirium following injury.