tvrdohlavý angolul

obstinate▼(adhering to an opinion, purpose, or course, usually unreasonably)
adjective
[UK: ˈɒb.stɪ.nət] [US: ˈɑːb.stə.nət]

stubborn▼(refusing to move or change one's opinion)
adjective
[UK: ˈstʌ.bən] [US: ˈstʌ.bərn]