undemocratic
adjective /ˌʌndeməˈkrætɪk/
  /ˌʌndeməˈkrætɪk/
- against or not acting according to the principles of democracy
- undemocratic decisions
 - an undemocratic regime
 - The system is fundamentally undemocratic.
 
Oxford Collocations DictionaryUndemocratic is used with these nouns:- regime