determined to have one's own way; willful; stubborn; obstinate:
a headstrong young man.
proceeding from or exhibiting willfulness:
a headstrong course.
Can be confused
(of an action) heedless; rash
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Despite being stubborn and headstrong with her parents, she is kind and courteous to the rest of the world, which is what matters.
He is an impetuous, headstrong workaholic, who is reluctant to delegate.
It's a vigorous, self-confident style of cooking, with an emphasis on headstrong flavors.
And they attract obsessive, difficult, headstrong people fixated on changing the world.
The headstrong president seems unlikely to give any ground.
Her character's confident, headstrong manner is nothing but overbearing.
The government hopes to rein in some of her more headstrong tendencies, but agrees broadly that pragmatism is the way ahead.
But though fortune may favour the brave, it can trip up the headstrong.
Headstrong, he declined to follow in his father's footsteps.
And walking dogs, especially large or headstrong ones, can be challenging in any conditions.