Easy : achieved without great effort; presenting few difficulties.Obstinate : stubbornly refusing to change one's opinion or chosen course of action, despite attempts to persuade one to do so.Willing : ready, eager, or prepared to do something.Pliable : easily bent; flexible.Stubborn : having or showing dogged determination not to change one's attitude or position on something, especially in spite of good arguments or reasons to do so.Synonym of Stubborn is Obstinate