A favourite or favorite (American English) was the intimate companion of a ruler or other important person. In medieval and Early Modern Europe, among other times and places, the term is used of individuals delegated significant political power by a ruler. It was especially a phenomenon of the 16th and 17th centuries, when government had become too complex for many hereditary rulers with no great interest in or talent for it, and political institutions were still evolving. From 1600 to 1660 there were particular successions of all-powerful minister-favourites in much of Europe, especially in Spain, England, France and Sweden.
The term is also sometimes employed by writers who want to avoid terms such as "royal mistress", or "friend", "companion" or "lover" of either sex. Several favourites had sexual relations with the monarch (or the monarch's spouse), but the feelings of the monarch for the favourite covered the full gamut from a simple faith in the favourite's abilities to various degrees of emotional affection and dependence, sometimes even sexual infatuation.
The term has an inbuilt element of disapproval and is defined by the Oxford English Dictionary as "One who stands unduly high in the favour of a prince", citing William Shakespeare: "Like favourites/ Made proud by Princes".
Favourites inevitably tended to incur the envy and loathing of the rest of the nobility, and monarchs were sometimes obliged by political pressure to dismiss or execute them; in the Middle Ages nobles often rebelled in order to seize and kill a favourite. Too close a relationship between monarch and favourite was seen as a breach of the natural order and hierarchy of society. Since many favourites had flamboyant "over-reaching" personalities, they often led the way to their own downfall with their rash behaviour. As the opinions of the gentry and bourgeoisie grew in importance, they too often strongly disliked favourites. Dislike from all classes could be especially intense in the case of favourites who were elevated from humble, or at least minor, backgrounds by royal favour. Titles and estates were usually given lavishly to favourites, who were compared to mushrooms because they sprang up suddenly overnight, from a bed of excrement. The King's favourite Piers Gaveston is a "night-grown mushrump" (mushroom) to his enemies in Christopher Marlowe's Edward II.