Violent derangement of mind; madness; insanity. Cf. Delirium.
- An excessively intense enthusiasm, interest, or desire; a craze: a mania for neatness.
- Psychiatry A manifestation of bipolar disorder, characterized by profuse and rapidly changing ideas, exaggerated sexuality, gaiety, or irritability, and decreased sleep.
- Violent abnormal behavior. See Synonyms at insanity.