heady

adjective

1. 1

   Intoxicating or stupefying.

   “The cocktail was a heady mixture of spirits.”

2. 2

   Tending to upset the mind or senses.

   “We looked out from a heady outcrop of rock.”

3. 3

   Exhilarating.

   “The rock concert was a heady mixture of their greatest hits.”

4. 4

   Intellectual.

   “Kierkegaard is rather heady reading for a high school student.”

5. 5

   Rash or impetuous.

   “He made too heady promises, and when it came time, he was never able to fulfill them.”