river

river — noun

1. a long, wide body of fresh water that travels across land and empties into a lar

1.nounA1
Definition

a long, wide body of fresh water that travels across land and empties into a larger body of water such as a lake, a sea, or another river

Example

The Mekong River flows through six countries before reaching the South China Sea.

flows through [number] countries — describes route

Every spring, the river near Kenji's village floods the low-lying rice fields.

floods [land] — natural event collocation

Common collocations
  • flow down the river
  • cross the river
  • river bank
  • river bed
  • river mouth
Synonyms
  • stream

    smaller than a river; can be narrow enough to jump across

  • waterway

    broader term that includes canals and channels, not just natural flows

  • tributary

    a river or stream that flows into a larger river, not a standalone river system

Grammar Patterns

the + river + verb

a + river

the + [River Name]

Usage Note

Countable noun. Use the definite article 'the' when referring to a specific river ('the river', 'the Amazon'), and 'a' when speaking generally ('a river'). The word 'river' itself describes fresh water only — saltwater channels are called straits or channels.

Common Mistakes

I saw a river in the ocean.
I saw a river flowing through the valley.
Rivers are bodies of fresh water on land, not in the ocean.
The Amazon is a river very long.
The Amazon is a very long river.
Adjectives in English go before the noun they describe.

2. included in the proper name of a watercourse, appearing either ahead of or follo

2.nounA2
Definition

included in the proper name of a watercourse, appearing either ahead of or following the place-name of the river

Example

The Amazon River is the second-longest river in the world after the Nile.

the [Name] River — American naming order

Tomás grew up in a small town on the Yangtze River in central China.

on the [Name] River — location with river name

Common collocations
  • the [Name] River
  • River [Name]
  • on the [Name] River
  • across the [Name] River

Grammar Patterns

the + [Name] + River

River + [Name]

Usage Note

Always capitalized when part of a proper name. Word order varies by region: British English prefers 'River Thames' (River before the name), while American English prefers 'the Amazon River' (River after the name). Both patterns require the definite article 'the'.

Common Mistakes

I crossed Amazon River last year.
I crossed the Amazon River last year.
The definite article 'the' must be used before river names.
He lives near the river thames.
He lives near the River Thames.
'River' in a name is always capitalized.

3. moving against the water's current, heading back toward the source where the riv

3.nounB1
Definition

moving against the water's current, heading back toward the source where the river starts

Example

Ife rowed the boat upstream for nearly an hour to reach the best fishing spot.

rowed upstream — verb + direction collocation

Every autumn, salmon swim up the river to lay their eggs in the gravel beds.

swim up the river — animal migration pattern

Common collocations
  • travel up the river
  • go upstream
  • up the river from [place]
Synonyms
  • upstream

    the compact single-word form of 'up the river'; used adverbially

  • against the current

    emphasises the physical effort of moving against water flow

Antonyms
  • downstream

    the opposite direction, moving with the water flow

Grammar Patterns

up the river

upstream

go up the river

row up the river

Usage Note

Often paired with movement verbs such as row, swim, walk, paddle, or sail. 'Up the river' and 'upstream' are interchangeable in most contexts, though 'upstream' can also function as an adverb without a following noun.

Common Mistakes

We went to upstream the river.
We went up the river.' or 'We went upstream.
'Upstream' is already an adverb; does not need a preposition before it.

4. moving with the water's current, heading away from the source toward the river's

4.nounB1
Definition

moving with the water's current, heading away from the source toward the river's end

Example

The logs floated downstream to the sawmill at the mouth of the river.

floated downstream — passive movement collocation

Cyrus paddled his canoe downstream and reached the lake just before sunset.

paddled downstream — active movement collocation

Common collocations
  • go downstream
  • down the river from [place]
  • float down the river
Synonyms
  • downstream

    the compact single-word adverbial form of 'down the river'

  • with the current

    emphasises the assistance of the water flow rather than the direction

Antonyms
  • upstream

    the opposite direction, moving against the water flow

Grammar Patterns

down the river

downstream

go down the river

float down the river

Usage Note

Commonly paired with movement verbs that imply ease or lack of effort, such as drift, float, paddle, or carry, because the water current helps the movement. 'Further downstream' is a frequent comparative phrase used in geography and environmental contexts.

Common Mistakes

The boat went down to the river.
The boat went down the river.
'Down the river' means following the current; 'down to the river' means going toward the riverbank.

5. a large, continuous amount of something moving or appearing in a steady stream —

5.nounB1
Definition

a large, continuous amount of something moving or appearing in a steady stream — used for liquids, emotions, words, or people to suggest unstoppable flow

Example

A river of hot lava from the volcano crept slowly toward the coastal village.

a river of lava — natural disaster metaphor

A mother cried a river when she saw her daughter in a white dress.

a river of tears — emotional metaphor

Common collocations
  • a river of tears
  • a river of lava
  • a river of people
  • rivers of blood
Synonyms
  • flood

    stronger and more sudden than 'river'; suggests overwhelming quantity

  • stream

    narrower and more controlled than 'river'; suitable for people or data

  • torrent

    very fast, forceful flow; used for water, words, or emotions

Antonyms
  • trickle

    a very small, slow flow — the opposite of a large, unstoppable river

Grammar Patterns

a river of + noun

rivers of + noun

Usage Note

Used in the structure 'a river of + noun' to describe something that flows continuously and in large quantity. Common in creative writing and journalism. The plural form 'rivers of' also appears ('rivers of blood', 'rivers of sweat').

Common Mistakes

There was a river of cars on the highway.
There was a steady stream of cars on the highway.
'River' in figurative use implies a wider, more continuous flow than the word 'stream'.
I have a river of work to do.
I have a mountain of work to do.' or 'a flood of work.
'River' is less common for abstract tasks; 'mountain' or 'flood' are more natural collocations.
Idioms

sell somebody down the river

idiom

To betray someone who trusted you, especially for personal gain.

Maya felt her partner sold her down the river during the meeting.

Did Diego really sell his best friend down the river for a promotion?