D defs.my
Entry 3 senses Webster, 1913

Heady

/(hĕd"y̆)/ · Head·y · IPA /ˈhɛdi/
01 a. Willful; rash; precipitate; hurried on by will or passion; ungovernable.
  1. 1.
    Willful; rash; precipitate; hurried on by will or passion; ungovernable.
    “All the talent required is to be hot, to be heady, -- to be violent on one side or the other.” Sir W. Temple.
  2. 2.
    Apt to affect the head; intoxicating; strong.
    “The liquor is too heady.” Dryden.
  3. 3.
    Violent; impetuous.