hardheaded

Adjective

• guided by practical experience and observation rather than theory
  • a hardheaded appraisal of our position
    
  • a hard-nosed labor leader
    
  • completely practical in his approach to business
    
  • not ideology but pragmatic politics
    

• unreasonably rigid in the face of argument or entreaty or attack

Related words

• Synonyms: 
  hard-nosed , practical , pragmatic , mulish