Understand the definitions:
- Very foolish (Ex. "That was rather mad of you, challenging Dracula to a blood-drinking contest.")
- Marked by uncontrolled excitement or emotion (Ex. "When he saw the wine glasses filled with red liquid, the vampire was swept away in a mad whirl of giddiness.")
- Affected with madness or insanity (Ex. "Upon arriving at the scene, the doctor, taking one look at the waxen, heavily draped creature which lay twitching nervously in the corner, pronounced his patient as being 'quite mad.'").