Focus on the pronunciation of obstinate
English definition of “obstinate”
› unwilling to change your opinion or action despite argument or persuasion; stubborn: an obstinate two-year-old › An obstinate thing or problem is difficult to deal with, remove, or defeat. obstinacy
/ˈɑb·stə·nə·si/ n [U] › the obstinacy of the human spirit obstinately
/ˈɑb·stə·nət·li/ adv › The engine obstinately refused to start.