A constitutional monarchy is a form of governance in which a monarch's authority is restricted by a constitution, setting it apart from an absolute monarchy by curbing power through legal structures. This system, seen in countries such as the United Kingdom and Japan, generally grants the monarch a symbolic function, while elected institutions hold executive and legislative authority.
Scholars like Walter Bagehot stressed the monarch's ceremonial responsibilities—advising, supporting, and cautioning—while Tomáš Garrigue Masaryk viewed it as a transitional fusion of aristocracy and democracy. Henry Hallam emphasized the constitutional relationship between monarchy and parliament, highlighting the monarch's symbolic status as the "fountain of law." These viewpoints together demonstrate how constitutional monarchy reconciles tradition with democratic rule, maintaining stability while adapting to shifting political values.