君主(くんしゅ)

くんしゅ
noun
monarch; sovereign; ruler
formalpoliticssociety
1. monarch; sovereign; ruler
A person who rules a country as king, queen, emperor, or similar hereditary head of state.
その国(くに)は君主(くんしゅ)が治(おさ)めている。
That country is ruled by a monarch.
日本(にほん)は立憲(りっけん)君主制(くんしゅせい)の国(くに)です。
Japan is a constitutional monarchy.
歴史(れきし)の授業(じゅぎょう)で、ヨーロッパの君主(くんしゅ)たちがどのように権力(けんりょく)を握(にぎ)ったかを学(まな)んだ。
In history class, we learned how European monarchs came to hold power.

Usage

君主(くんしゅ) is a formal word for a hereditary ruler. It is used in political, historical, and academic contexts.

Common collocations

Similar words

王(おう) (king) refers specifically to a king. 君主(くんしゅ) is broader and includes emperors, queens, and other hereditary rulers. 元首(げんしゅ) (head of state) is even broader and includes presidents.

Related Words

Related: 王室(おうしつ) (royal family)
Compare: 王(おう) (king)
Compare: 統治者(とうちしゃ) (ruler)
general
Added 2026.3.6 17:51 · Revised 2026.9.2 13:01
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