1. Characterized by assertion of unproved or unprovable principles
   "The professor's dogmatic approach to the subject left no room for debate";
   - dogmatical
    
2. Of or pertaining to or characteristic of a doctrine or code of beliefs accepted as authoritative
   "His dogmatic approach to religion left no room for questioning or doubt"
    
3. Relating to or involving dogma
   "dogmatic writings"

See also: narrow, narrow-minded

Encyclopedia: Dogmatic