1) 遡さかのぼる #15,489 Inflections of 遡る Class Godan verb Stem Inflected ending ✕ Link copied! Common さかのぼる [4] Meaning Shirabe ① Godan verb Intransitive verb Usually kana to go upstream; to go up (a river) 鮭さけは川かわをさかのぼって砂すなに産卵さんらんする。 Salmon go up the river and lay their eggs in the sand. ② Godan verb Intransitive verb Usually kana to go back (to the past or origin); to date back (to); to trace back (to); to be retroactive (to) その教会きょうかいは1173せんひゃくななじゅうさん年ねんまでさかのぼる。 The church dates back to 1173. Kanji 遡 ソ go upstream, retrace the past Forms 遡る#8,707遡さかのぼるさかのぼる#15,489さかのぼる溯る#93,352溯さかのぼる逆上る#166,817逆上さかのぼる泝る#392,701泝さかのぼる