STUBBORN
implacable, inexorable, intractable, recalcitrant, refractory, renitent, untoward, vexing
implacable
cannot be appeased or be pacified
inexorable
unyielding, stubborn
intractable
stubborn; (hard to treat; hard to mold)
recalcitrant
disobedient
refractory
stubbornly disobedient
renitent (ri-NAYHT-nt, REN-i-tuhnt)
resistant; persistently opposing
untoward
unfavorable; (improper)
vexing
to attack or harrass
implacable, inexorable, intractable, recalcitrant, refractory, renitent, untoward, vexing
STUBBORN