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How to say "Arbitrary" in Japanese

Both words can translate to "arbitrary", but which should you choose?

Japanese Option A

恣意

しい (shii)
N2 / CEFR Syllabus
VS
Japanese Option B

専断

せんだん (sendan)
N1 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "arbitrary" into Japanese, you must choose carefully between 恣意 and 専断. In Japanese, 恣意 (しい (shii)) is typically associated with "arbitrary, capricious, wilful" (Syllabus Level: N2) and represents Often used in negative contexts, implying actions or decisions made without objective reason, fairness, or consistency, based purely on personal whim or discretion.. On the other hand, 専断 (せんだん (sendan)) maps to "arbitrary decision; acting on one's own authority; autocracy" (Syllabus Level: N1) and represents Used when someone makes a decision or acts unilaterally without consulting others or without proper authorization, often carrying a negative connotation of disregarding others' opinions or rules. (他者の意見や規則を無視して、独断で決定したり行動したりする際に使われ、否定的な意味合いを含むことが多い。). A literal translation of "arbitrary" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "恣意"
彼の判断は恣意的に見え、多くの批判を招いた。
His judgment seemed arbitrary and drew much criticism.
Bilingual Context for "専断"
彼は会議で皆の意見を聞かずに専断したため、反発を招いた。
He made an arbitrary decision in the meeting without listening to everyone's opinions, which led to backlash.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "彼の判断は ___ 的に見え、多くの批判を招いた。" (Meaning: "His judgment seemed arbitrary and drew much criticism.")
🎉 Correct Answer!

Remember: "恣意" fits here because it means "arbitrary, capricious, wilful" in the context of: "His judgment seemed arbitrary and drew much criticism.". "専断" represents "arbitrary decision; acting on one's own authority; autocracy".

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