Synonym Nuance VS
How to say "Reason" in Japanese
Both words can translate to "reason", but which should you choose?
Japanese Option A
理由
りゆう (riyū)
N4 / CEFR Syllabus
VS
Japanese Option B
国家理性
こっかりせい (kokkarisei)
C2 / CEFR Syllabus
Nuance Contrast & Translation Difference
When translating "reason" into Japanese, you must choose carefully between 理由 and 国家理性.
In Japanese, 理由 (りゆう (riyū)) is typically associated with "reason, motive" (Syllabus Level: N4) and represents A noun referring to the cause or explanation for something. Often used with なぜ.
On the other hand, 国家理性 (こっかりせい (kokkarisei)) maps to "reason of state / raison d'état" (Syllabus Level: C2) and represents Essential structural term in CEFR C2 vocabulary syllabus.. A literal translation of "reason" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "理由"
遅刻した理由を教えてください。
Please tell me the reason for being late.
Bilingual Context for "国家理性"
私は国家理性に興味があります。
I am interested in reason of state / raison d'état.
Nuance Mastery Quiz
Which Japanese word perfectly fits this blank space?
Fill in the blank: "遅刻した ＿＿＿ を教えてください。" (Meaning: "Please tell me the reason for being late.")
🎉 Correct Answer!
Remember: "理由" fits here because it means "reason, motive" in the context of: "Please tell me the reason for being late.". "国家理性" represents "reason of state / raison d'état".