headstrong

a. 顽固的,刚愎的,任性的

Foolishly or irrationally stubborn; headstrong.

顽固的，刚愎自用的愚蠢地或无理地顽固的；任性的

She's hopelessly headstrong; she always gets up against people around her.

她任性得无要救药，老是同周围的人闹别扭。