共和国|きょうわこくkyouwakoku

1. nounrepublic; commonwealth
   アメリカ合衆国あめりかがっしゅうこくは共和国きょうわこくである。↗

   The United States is a republic.

• SynonymリパブリックNeutralA loanword meaning republic, used mainly in brand names and proper names; in everyday speech say 「共和国」.
• SynonymレパブリックNeutralAnother spelling of the English loanword; rare in everyday use and seen mostly in proper names.
• Antonym王国おうこくNeutralA country whose head of state is a king; it stands opposite to the republican 「共和国」.
• Antonym帝国ていこくNeutralAn empire ruled by an emperor; the opposite of 「共和国」, which elects its head of state.

For a republic, say 「共和国」, as in 「フランス共和国」. The loanwords レパブリック and リパブリック appear mainly in proper names. For monarchies on the opposite side, use 「王国」 or 「帝国」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 共和制きょうわせいの国家こっか。