1. 名詞
   不可數名詞: 頑固
   冷靜, 腳踏實地
   

   同義字詞
   bullheadedness,doggedness,intransigence,mulishness,obduracy,obdurateness,obstinacy,obstinateness,opinionatedness,pertinaciousness,pertinacity,pigheadedness,self-will,stubbornness,willfulness
   acumen,astuteness,caginess,cageyness,canniness,clear-sightedness,foxiness,intelligence,keenness,knowingness,sharpness,shrewdness,wit
   

例句

1. I loved him even if he periodically drove me crazy with his hardheadedness .
2. The best friends fight over whether or not to contact the person who used the name Chrollo Lucifer , with Gon's hardheadedness winning out.
3. As a person who has occasionally been accused of hardheadedness and annoying certitude (when you're right, you're right!), maybe I'm not the best person to call for peace, understanding and compromise in these troubled days.
4. At the same time Fastolf s attitude to the practicalities of war reflect a hardheadedness which was essentially of this world: the plan which he drew up in 1435 favouring a 'tough' approach to the war made little concession to romantic ideas of chivalry which would influence a knight's conduct in war.