upriver
🇺🇸
/ˌʌpˈrɪvər/
🇬🇧
/ˌʌpˈrɪvə(r)/
adverb
R
Moving or going in the direction against the flow of a river.
We decided to hike upriver to find the source of the beautiful waterfall.
私たちは美しい滝の源を探しに上流へのハイキングを決定しました。
translation
上流