This site will be taken down March 31st, 2026.

This was not an easy decision to make. For the last couple years, I have been struggling to find motivation for this site and to keep up with basic maintenance and security updates. With the rise of AI and more sophisticated tools, the usefulness of sites like this is questionable and traffic has nose-dived. I just don't have it in me to keep doing this. Thank you all for 10 years of support!

Zach

Readings

Kana: ソ、サク、さかのぼ.る
Romaji: so, saku, sakanobo.ru
Kana
Romaji

Meanings

go upstream, retrace the past

Stroke Diagram

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Kanji Info

Stroke Count:  14
Radical Number:  162
Frequency: 
Grade:  8
Skip Pattern:  3-3-10
Korean Reading:  so
Chinese Reading:  su4
Unicode:  9061
JIS:  414C

Indexes

Halpern Index: 3257
Nelson Index: 4727
New Nelson Index: 6094
Spahn Hadamitzky Index: 3a10.2
Four Corner Index: 3730.2
Daikanwanjiten Index: 39048X
Daikanwanjiten Index and Page: 11.0160
Remembering the kanji Index: 2847
2013 Kanji Learners Index: 2785
Remembering the Kanji 6th Index: 2111
Kodansha Kanji Index: 4040

Words

遡る (さかのぼる)
to go upstream; to go back (in time, to origin); to date back to; to trace back to; to make retroactive
遡河魚 (そかぎょ、さっかぎょ)
anadromous fish (fish that migrates upstream, e.g. salmon)
遡求 (そきゅう)
redemption; recourse
遡行 (そこう)
going upstream; sailing against the current
遡及書誌 (そきゅうしょし)
retrospective bibliography
遡及 (さっきゅう、そきゅう)
tracing back; retroactivity
遡及的 (そきゅうてき)
retroactive
遡源 (さくげん、そげん)
returning to the origin; going back to the beginning; retracing
遡上 (そじょう)
going upstream; retroact; retrospect
遡求権 (そきゅうけん)
right of recourse; right for redemption
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