Opposed to or working against aristocracy and the privilege of the noble upper class.
From anti- (against) + aristocratic (Greek aristos best + kratia rule, plus -ic forming an adjective). This adjective became prevalent in political discourse during the 18th and 19th centuries.
The leveling movement of the English Civil War was staunchly antiaristocratic—they wanted to completely flatten social hierarchy and create a society based on merit, not birthright!
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