KANJI
遡
trace back
go upstream, go back, hark back
Kun'yomi
さかのぼ
On'yomi
そ
Example sentences
この事件の真相を解明するためには、過去に遡る必要がある。
In order to clarify the truth of this incident, it is necessary to trace back into the past.
環境問題の根本的な解決策を見出すには、その発生源まで遡らなければならない。
To find a fundamental solution to environmental problems, one must trace back to their origin.
鮭は産卵のため、孵化した川を何千キロも遡る。
Salmon go thousands of kilometers upstream in the river where they hatched, for spawning.
Practice exercises
1
遡
Answer
さかのぼるそ
2
遡
Answer
trace backgo upstreamretroactively
3
遡上
going upstream; spawning migration (of fish)
Answer
そじょう
4
遡及
retroactive; retrospection
Answer
そきゅう
5
遡行
going upstream; tracing back (e.g., a river, history)
Answer
そこう
6
遡及効
retroactive effect
Answer
そきゅうこう