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

12345678910111213

Kanji Info

Stroke Count:  13
Radical Number:  85
Frequency: 
Grade: 
Skip Pattern:  1-3-10
Korean Reading:  sag
Chinese Reading:  su4
Unicode:  6eaf
JIS:  5E6A

Indexes

Nelson Index: 2653
New Nelson Index: 3272
Spahn Hadamitzky Index: 3a10.2
Four Corner Index: 3712.0
Daikanwanjiten Index: 17975
Daikanwanjiten Index and Page: 7.0168
Kodansha Kanji Index: 823

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
遡及 (さっきゅう、そきゅう)
tracing back; retroactivity
遡行 (そこう)
going upstream; sailing against the current
遡河魚 (そかぎょ、さっかぎょ)
anadromous fish (fish that migrates upstream, e.g. salmon)
遡源 (さくげん、そげん)
returning to the origin; going back to the beginning; retracing
Find More