heady in WordNet English dictionary

1. marked by defiant disregard for danger or consequences
   "foolhardy enough to try to seize the gun from the hijacker"; "became the fiercest and most reckless of partisans"-Macaulay; "a reckless driver"; "a rash attempt to climb Mount Everest"
   foolhardy  heady  rash  reckless 
   
2. extremely exciting as if by alcohol or a narcotic
   heady  intoxicating 
   
3. marked by the exercise of good judgment or common sense in practical matters
   "judicious use of one's money"; "a wise decision"
   judicious  wise  heady