also upriver
Something that is moving up-river is moving towards the source of a river, from a point down the river. Something that is up-river is towards the source of a river.
Heavy goods could be brought up-river in barges...
He has a house down there but it’s miles up river...
The vineyards of Anjou extend from west of Angers to up-river of Saumur.
...La Reole, up-river from St-Macaire.
≠ down-river
ADV : ADV after v , be ADV , oft ADV of/from n
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Up-river is also an adjective.
...an upriver trip in Central Africa.
ADJ : ADJ n