hardheaded
US /ˈhɑrdˈhɛdɪd/
・UK /'hɑ:d'hedɪd/
A1
verb
- Guided by practical experience and observation rather than theory
- Unreasonably rigid in the face of argument or entreaty or attack
adjective
- Practical and realistic; not easily swayed by emotions.
- Stubborn; obstinate.