Social system and stage of human development characterized by common ownership of the means of production and the absence of social classes; political and economic ideology or doctrine established by 马克思 mǎ​kè​sī and 恩格斯 ēn​gé​sī

(bound form) used after a verb, adjective, or noun to represent the person or thing performing an action or possessing a quality; translates as "-er", "-ist", or "one who"