English Reference
adjective · adverb · verb

downstream

adj. · adv. · v.
US /ˈdaʊnˈstɹim/ UK /dˈaʊnstɹiːm/ down·stream

  1. 01 B2 Upper Intermediate

    adj.located or moving in the direction that a river or stream flows.

    adj.situated or moving in the direction of the current of a stream or river.

    Simple

    The downstream bridge was damaged during the heavy spring floods.

    In context

    The downstream communities reported significantly higher levels of silt after the construction of the new dam began.

    Usage

    usually placed before the noun

    downriver
  2. 02 B2 Upper Intermediate

    adv.moving towards the mouth of a river, following the water.

    adv.in the direction of a stream's current.

    Simple

    We floated downstream for three hours until we reached the lake.

    In context

    The pollutants were carried downstream, affecting the delicate ecosystem of the estuary miles away from the factory.

    Usage

    typically follows the verb

    downriver
  3. 03 C1 Advanced Academic

    adj.happening later in a process or as a result of something else.

    adj.occurring at a later stage in a sequence of events or as a consequence of a prior action.

    Simple

    The factory closure had many downstream effects on local shops.

    In context

    The policy change created several downstream complications that the committee had failed to anticipate during the initial planning phase.

    Usage

    frequently used in business and science to describe results

  4. 04 C2 Proficiency Technical Computing

    v.to send a software update or fix to the people who use the program.

    v.to provide a version or patch to subsequent developers or end-users in a software distribution chain.

    Simple

    The developers will downstream the security patch to all users tomorrow.

    In context

    Once the core vulnerabilities were addressed, the team worked to downstream the fixes to the various regional branches of the project.

    Usage

    transitive verb requiring a direct object

Downstream of the turbines, strong variations in air movement enhance the exchange between different layers of the atmosphere.

Phys.org· 20 Aug 2026

But they may reach levels at which no water beyond what’s required to generate power – or what arrives as rain or snow – would flow downstream.

The Conversation· 20 Aug 2026

From down- + stream.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated