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synonym Comparative
先行
VS
遡及

Differences Between "先行" and "遡及"

Option A
先行
Meaning
preceding; going first; prior
Reading
せんこう (senkō)
Syllabus Level
N2
Practical Example
この商品は一般発売に先行して、オンラインで予約が開始された。
Reservations for this product started online, preceding its general release.
Option B
遡及
Meaning
retrospection, going back in time
Reading
そきゅう (sokyuu)
Syllabus Level
C2
Practical Example
私は遡及に興味があります。
I am interested in retrospection, going back in time.

Which one to use?

Select the correct Japanese word for this context

Which word fits this context: "(preceding; going first; prior)"?
🎉 正解 / Correct!
使い分け解説:
- 先行: Can be used as a noun (先行) or as part of a verb (先行する). It often implies being ahead in time, development, or action, setting a precedent or trend. Often seen in contexts like '先行販売' (pre-sale) or '先行研究' (prior research).
- 遡及: Essential structural term in CEFR C2 vocabulary syllabus. (CEFR C2語彙シラバスにおける重要表現です。)
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