headstrong

adjective

she has been rather headstrong and argumentative:

wilful, self-willed, strong-willed, contrary, perverse, wayward, unruly, refractory, ungovernable, unyielding, stubborn, obstinate, obdurate;

reckless, heedless, rash, capricious, impulsive, wild.

▷antonyms tractable.

choose the right word	headstrong, wilful, obstinate, stubborn
See obstinate.

headstrong Oxford Dictionary of English