Translation guide
The English word 'imperial' relates to an empire or emperor. In Japanese, the most common equivalent is 帝国の (teikoku no) for 'of an empire', but when referring to the Japanese emperor or imperial family, specific terms like 皇室 (kōshitsu) or 天皇の (tennō no) are used. This guide helps you choose the right expression based on context.
Describing something belonging to or characteristic of an empire, such as an imperial army, imperial power, or imperial expansion.
The standard way to say 'imperial' in the sense of 'of an empire'. 帝国 means 'empire', and の makes it an adjective.
ローマ帝国の軍隊は強力だった。
The imperial army of Rome was powerful.
Imperial expansion caused many conflicts.
Refers to imperial rule or an imperial system of government. Often used in historical contexts like 'imperial Rome' (帝政ローマ).
帝政ローマの時代に多くの建造物が作られた。
Many structures were built during the imperial Roman era.
Literally 'of the emperor'. Use this when specifically referring to something belonging to or associated with an emperor, rather than the empire as a whole. Less common than 帝国の for general 'imperial'.
皇帝の権力は絶大だった。
The imperial authority was immense.
Referring to the emperor of Japan, the imperial household, or things associated with them, such as the imperial palace, imperial succession, or imperial family.
The most common term for the Japanese imperial family or imperial household. Used in phrases like 'imperial family' (皇室) or 'imperial succession' (皇室の継承).
皇室の伝統は長い歴史を持っている。
The imperial family's traditions have a long history.
皇室の行事がテレビで放送された。
The imperial ceremony was broadcast on TV.
Means 'of the emperor' (specifically the Japanese emperor). Use when emphasizing the emperor personally, e.g., 'imperial rescript' (天皇の詔書).
天皇の誕生日は国民の祝日です。
The Emperor's Birthday is a national holiday.
Refers specifically to an imperial palace or residence. Often used in historical contexts or for the Kyoto Imperial Palace (京都御所).
Describing something as having the grandeur, authority, or imposing quality of an empire, such as an 'imperial manner' or 'imperial style'.
Means 'dignified', 'majestic', or 'imposing'. This is the most natural way to convey the figurative sense of 'imperial' as grand or commanding.
彼は堂々とした態度で会議に臨んだ。
He attended the meeting with an imperial manner.
Literally 'having dignity/authority'. Suitable for describing a person or thing that exudes an imperial, authoritative presence.
その建物は威厳のある外観をしている。
The building has an imperial appearance.
Means 'magnificent' or 'grand'. Can be used for imperial-scale architecture or landscapes, but is less specific to the nuance of authority.
壮大な宮殿が丘の上に立っていた。
An imperial palace stood on the hill.
Referring to the imperial system of weights and measures (e.g., inches, pounds) as opposed to the metric system.
The standard Japanese term for the imperial system of measurement. Literally 'yard-pound system'.
アメリカではまだヤード・ポンド法が使われている。
The imperial system is still used in the United States.
A direct translation of 'imperial units', but rarely used in natural Japanese. ヤード・ポンド法 is strongly preferred.
This is a literal translation and may not be understood by all Japanese speakers. Use ヤード・ポンド法 instead.
帝国単位はメートル法と異なる。
Imperial units differ from the metric system.
帝国の (teikoku no) is used for empires in general (e.g., Roman Empire, British Empire). 皇室 (kōshitsu) specifically refers to the Japanese imperial family as an institution. 天皇の (tennō no) refers to the emperor personally. Do not use 帝国の for the Japanese imperial family unless you are talking about the historical Empire of Japan (大日本帝国).
When 'imperial' is used figuratively to mean 'majestic' or 'commanding', do not translate it as 帝国の. Instead, use adjectives like 堂々とした (dignified) or 威厳のある (authoritative).
彼の堂々とした振る舞い
his imperial bearing
皇居は一般公開されています。
The imperial palace is open to the public.
皇居 (Kōkyo) is the specific name for the current Imperial Palace in Tokyo.
彼女は堂々とした態度をしている。
She has an imperial attitude.
帝政ローマは強力な文明だった。
Imperial Rome was a powerful civilization.
The Kyoto Imperial Palace is visited by many tourists.