sakanoboru
1. to go upstream; to go up (a river)
2. to go back (to the past or origin); to date back (to)
★ Common
Verb
#13524
1. to go upstream; to go up (a river)
2. to go back (to the past or origin); to date back (to)
1. going upstream; sailing against the current
1. going upstream; swimming upstream
1. going to the source; tracing to the origin
1. retroactivity; retroaction
1. anadromous fish (fish that migrates upstream, e.g. salmon)