The word kholop was first mentioned in a chronicle for the year of 986. Its etymology is unclear. By one hypothesis, the word is cognate with Slavic words translated as "boy" (more specifically, adolescent male; modern Ukrainian: хлопець (khlopets), Polish: chlopak, Bulgarian: хлапе/хлапак), which is similar to the use of the English word boy as "servant".
The Slavic word itself is derived from the hypothetical root *chol related to premarital state, unmarriedness, inability for reproduction. By another hypothesis, it is derived from a Germanic root, represented in English by the word "help".
In the 11th - 12th centuries, the term referred to different categories of dependent people and especially slaves. A kholop’s master had unlimited power over his life, e.g., he could kill him, sell him, or pay his way out of debt with him. The master, however, was responsible for a kholop’s actions, such as insulting a freeman or stealing.
A person could become a kholop as a result of capture, selling oneself, being sold for debts, after having committed crimes, or through marriage to a kholop. Until the late 15th century, the kholops represented a majority among the servants, who had been working lordly lands. Some kholops, mainly house serfs, replenished the ranks of the princely servants (including those in the military) or engaged themselves in trades, farming, or administrative activities.
Throughout the 16th century, the kholops’ role in the corvée economy had been diminishing due to the increasing involvement of peasant exploitation (see Russian serfdom). At the turn of the 16th century, the service class kholops (служилое холопство, sluzhiloye kholopstvo) began to emerge and spread across the country. In the late 17th century, there were also kholops "chained" to their land (посаженные на землю, posazhenniye na zemlyu), who took care of their own household and had to pay quitrent. Those kholops, who had been house serfs, were subject to poll tax in 1722-1724 and were thereafter treated as ordinary serfs.
"Combat servants" (Russian: Боевые холопы, tr. Boevie kholopi), also known as "military slaves" in literature, constituted an armed retinue and personal protection for large and medium-sized landowners in the 16th-18th centuries, and carried out military service together with noblemen, constituting a considerable part of the "Landed army". They were equipped as mounted archers, usually wearing cheap quilted armor and caps.
- The Cambridge history of Russia. Perrie, Maureen, 1946-, Lieven, D. C. B., Suny, Ronald Grigor. Cambridge: Cambridge University Press. 2006. p. 576. ISBN 9780521812276. OCLC 77011698.CS1 maint: others (link)
- The Cambridge history of Russia. Perrie, Maureen, 1946-, Lieven, D. C. B., Suny, Ronald Grigor. Cambridge: Cambridge University Press. 2006. p. 383. ISBN 9780521812276. OCLC 77011698.CS1 maint: others (link)
- "Историческое описание одежды и вооружения российских войск (Второе изд.)". www.runivers.ru. Retrieved 2018-03-21.