외고집in English:contrariness, obstinacy

Examples
with 외고집.

• 그는 외고집이 심해서 다른 사람의 의견을 듣지 않아요.geuneun oegojibi simhaeseo dareun saramui uigyeon-eul deudji anayo.He is so obstinate that he doesn't listen to other people's opinions.