heady
/ˈhɛdi/
adjective
Meaning
Intoxicating or stupefying.
"The cocktail was a heady mixture of spirits."
Tending to upset the mind or senses.
"We looked out from a heady outcrop of rock."
Exhilarating.
"The rock concert was a heady mixture of their greatest hits."
Intellectual.
"Kierkegaard is rather heady reading for a high school student."
Rash or impetuous.
"He made too heady promises, and when it came time, he was never able to fulfill them."