Definitions
1.nounOne who commands absolute obedience to his or her authority."The dictator was an authoritarian."
2.nounOne who follows and is excessively obedient to authority."2006, Robert Altemeyer, The Authoritarians"
3.adjectiveOf, or relating to, or exhibiting strict obedience to an authority; favoring authoritarianism over civic and individual liberties.
4.adjectiveDemanding obedience to authority; marked by authoritarianism; dictatorial, tyrannical."The authoritarian government was demanding stricter laws for low-wage peasants."
5.adjectiveTending to impose one's demands upon others as if one were an authority.