Democrat
来自Big Physics
late 18th century (originally denoting an opponent of the aristocrats in the French Revolution of 1790): from French démocrate, on the pattern of aristocrate ‘aristocrat’.
wiktionary
From French démocrate, from démocratie (modelled on aristocrate(“aristocrat”)).
etymonline
democrat (n.)
1790, "adherent or advocate of democracy," with reference to France, from French démocrate (18c., opposed to aristocrate), back-formation from démocratie (see democracy); formally revived in U.S. as a political party affiliation 1798, with a capital D. As a shortening of this, Demo (1793) is older than Dem (c. 1840). An earlier noun for "adherent of democracy" was democratian (1650s).