King is the title given to a male monarch in a variety of contexts. A king is an absolute monarch if he holds the powers of government without control, or the entire sovereignty over a nation; he is a limited monarch if his power is restrained by fixed laws; and he is an absolute, when he holds the whole legislative, judicial, and executive power, or when the legislative or judicial powers, or both, are vested in other people by the king. Kings are hereditary sovereigns when they hold the powers of government by right of birth or inheritance, and elective when raised to the throne by choice.
In the context of prehistory, antiquity and contemporary indigenous peoples, the title may refer to tribal kingship. Germanic kingship is cognate with Indo-European traditions of tribal rulership (c.f. Indic rājan, Gothic reiks, and Old Irish rí, etc.).
In the context of classical antiquity, king may translate in Latin as rex and in Greek as archon or basileus.
In classical European feudalism, the title of king as the ruler of a kingdom is understood to be the highest rank in the feudal order, potentially subject, at least nominally, only to an emperor (harking back to the client kings of the Roman Republic and Roman Empire).[1]
In a modern context, the title may refer to the ruler of one of a number of modern monarchies (either absolute or constitutional). The title of king is used alongside other titles for monarchs: in the West, emperor, grand prince, prince, archduke, duke or grand duke, and in the Islamic world, malik, sultan, emir or hakim, etc.[2]
The term king may also refer to a king consort, a title that is sometimes given to the husband of a queen regnant, but the title of prince consort is more common.
The English term king is derived from the Anglo-Saxoncyning, which in turn is derived from the Common Germanic *kuningaz. The Common Germanic term was borrowed into Estonian and Finnish at an early time, surviving in these languages as kuningas. It is a derivation from the term *kunjom "kin" (Old Englishcynn) by the -inga- suffix. The literal meaning is that of a "scion of the [noble] kin", or perhaps "son or descendant of one of noble birth" (OED).
The English term translates, and is considered equivalent to, Latin rēx and its equivalents in the various European languages. The Germanic term is notably different from the word for "King" in other Indo-European languages (*rēks "ruler"; Latinrēx, Sanskritrājan and Irishrí; however, see Gothic reiks and, e.g., modern German Reich and modern Dutch rijk).
With the breakup of the Carolingian Empire in the 9th century, the system of feudalism places kings at the head of a pyramid of relationships between liege lords and vassals, dependent on the regional rule of barons, and the intermediate positions of counts (or earls) and dukes. The core of European feudal manorialism in the High Middle Ages were the territories of the former Carolingian Empire, i.e. the kingdom of France and the Holy Roman Empire (centered on the nominal kingdoms of Germany and Italy).[4]
In the course of the European Middle Ages, the European kingdoms underwent a general trend of centralisation of power, so that by the Late Middle Ages there were a number of large and powerful kingdoms in Europe, which would develop into the great powers of Europe in the Early Modern period.
Most famously, in Western Europe, the western part of the Carolingian Empire became Francia Occidentalis (West Francia) and developed into the Kingdom of France covering at its height all the lands between the Atlantic and the Rhine. Its fragmented several times into almost independent states, but was several times the preeminent military and cultural power in Europe. Its monarch evolved from "Francorum Rex Occidentalis" (king of the Western Franks) to "Franciae Rex" ("King of France") and in French "Roi de France" (see Style of the French sovereign. Under the French Empire this was Emperor of the French and under the constitutional monarchy King of the French.
By the end of the Middle Ages, the kings of these kingdoms would start to place arches with an orb and cross on top as an Imperial crown, which only the Holy Roman Emperor had had before. This symbolized them holding the imperium and being emperors in their own realm not subject even theoretically anymore to the Holy Roman Emperor.
Currently (as of 2023[update]), seventeen kings are recognized as the heads of state of sovereign states (i.e. English king is used as official translation of the respective native titles held by the monarchs).
^History Crunch Writers. "Aztec Emperors (Huey Tlatoani)". History Crunch - History Articles, Summaries, Biographies, Resources and More. Retrieved 18 April 2021.
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see e.g. M. Mitterauer, Why Europe?: The Medieval Origins of Its Special Path, University of Chicago Press (2010),
p. 28.