willfully

/ˈwɪlfəli/
adverb
  1. In a deliberate and intentional way, often with the knowledge that one's actions are wrong or harmful.
    • He willfully ignored the warning signs and drove onto the closed road.
    • The company willfully misled customers about the safety of its product.
    • She willfully broke the rules because she disagreed with them.
  2. In a stubborn or headstrong manner, refusing to change one's mind or actions.
    • He willfully continued his argument even after everyone else had agreed.
    • The child willfully refused to put on his coat despite the cold weather.
    • She willfully stuck to her plan, even when it was clear it wouldn't work.