1574 W. Bourne Introd. 7 He ought..not to be light or rash headed.
1659 G. Torriano Caca-fuoco, a shite-fire, by Met. a hot-spur, a rash-headed fellow.
1841 G. P. R. James xxvi Young rash-headed boys run into these encounters for mere sport.
1889 4 Apr. He called me rash-headed; said that I did not know what was good for myself.