The term serf, in the sense of an unfree peasant of the Russian Empire, is the usual translation of krepostnoi krestyanin (крепостной крестьянин). The origins of serfdom in Russia are traced to Kievan Rus' in the 11th century. Legal documents of the epoch, such as Russkaya Pravda, distinguished several degrees of feudal dependency of peasants.
Serfdom became the dominant form of relation between peasants and nobility in the 17th century. Serfdom only existed in central and southern areas of the Russian Empire. It was never established in the north, the Urals or Siberia.
Tsar Alexander I wanted to reform the system but was stymied. New laws allowed all classes (except the serfs) to own land, a privilege that was previously confined to the nobility. Russian serfdom was finally abolished in the emancipation reform of 1861 by Tsar Alexander II. Scholars have proposed multiple overlapping reasons to account for the abolition, including fear of a large-scale revolt by the serfs, the government's financial needs, evolving cultural sensibilities and the military's need for soldiers.
The term muzhik, or moujik (Russian: мужи́к; IPA: [mʊˈʐɨk]) means "Russian peasant" when it is used in English. This word was borrowed from Russian into Western languages through translations of 19th-century Russian literature, describing Russian rural life of those times, and where the word muzhik was used to mean the most common rural dweller - a peasant - but this was only a narrow contextual meaning.
The origins of serfdom in Russia (крепостничество, krepostnichestvo) may be traced to the 11th century; however, the most complete form of feudal exploitation enveloped only certain categories of rural population. In the 12th century, the exploitation of the so-called zakups on arable lands (ролейные (пашенные) закупы, roleyniye (pashenniye) zakupy) and corvee smerds (Russian term for corvee is барщина, barschina) was the closest to what is now known as serfdom. According to the Russkaya Pravda, a princely smerd had limited property and personal rights. His escheat was given to the prince and his life was equated with that of the kholop, meaning his murder was punishable by 5 grivnas.