obstinate (adj) - stubbornly sticking to an opinion or course of action; inflexible; difficult to manage or control [ob-stuh-nit]
BREAKDOWN: OB- (against) + STIN- (stand) + -ATE (inclined to)
obstinacy is the quality of being obstinate; an act of stubbornness
See also: armistice, substantive
“True wisdom is less presuming than folly. The wise man doubts often, and changes his mind; the fool is obstinate, and doubts not; he knows all things but his own ignorance.” —Akhenaton