a. 1. Not easily restrained; ungovernable; obstinate; stubborn. [ 1913 Webster ]
Now let the headstrong boy my will control. Dryden. [ 1913 Webster ]
2. Directed by ungovernable will, or proceeding from obstinacy; as, a headstrong course. Dryden.
Syn. -- Violent; obstinate; ungovernable; untractable; stubborn; unruly; venturesome; heady. [ 1913 Webster ]
n. Obstinacy. [ R. ] Gayton. [ 1913 Webster ]