If you describe someone as obstinate, you are being critical of them because they are very determined to do what they want, and refuse to change their mind. 固执的
adjective [原级]执拗的,固执的;棘手的,难以去除的
He is obstinate and determined and will not give up. 他固执、坚决,不会放弃。
obstinate
“ -ate” ⌜ 表示使成为或具有某种特性的 - indicating to make or become ~ ⌟
ob (反对) + stin (看作sist, 站立) + ate (…的) → 偏要反着站 → 顽固的