adj. head·i·er,
head·i·est 1. a. Intoxicating or stupefying: heady liqueur.
b. Tending to upset the mind or the balance of senses: standing on a heady outcrop of rock.
c. Serving to exhilarate: the heady news of triumph.
2. a. Impetuous and rash: a heady outburst of anger.
b. Domineering; overbearing: too heady to reason with.
3. Swift and violent; headlong: a heady current.
4. Showing intelligence and good judgment; prudent: heady tactics.
5. Suffering from a headache: a heady, throbbing feeling.