The source’s main trouble and finance-related water idioms have their own lessons already. This page focuses on two different uses: treating an unchangeable past event as finished, and checking whether an argument is convincing.

Cultural note: “Water under the bridge” is the more common U.S. version of “water over the dam.” It can sound dismissive when someone is still affected by what happened. To “throw cold water on” an idea is critical; explain the concern rather than merely rejecting the proposal.

Keep exploringWater imagery can mark something as finished—or expose weak spots in an argument.

Phrase guide · 2 expressions

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Original explanations and examples, created for learners. Save a card for later or hear the phrase spoken by your browser.

Past events

Talk about an event that cannot now be changed.

water over the dam

Meaning

A past event that is finished and cannot be changed now.

Tone & use

The common U.S. variation is “water under the bridge.” It may minimize someone’s continuing hurt, so check how they feel before moving on.

Example

“The schedule mistake is water over the dam; let’s focus on making the next update clearer.”

NeutralInformal / idiomatic

Evaluating ideas

Question a proposal or explanation and explain why.

throw cold water on an idea

Meaning

Discourage or criticize a proposal, often by pointing out problems.

Tone & use

Can sound negative or dismissive. A specific concern and a possible alternative make the feedback more useful.

Example

“Instead of throwing cold water on the student’s idea, the teacher helped her find a safe way to test it.”

NegativeInformal / idiomatic

Knowledge check

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Water Expressions: The Past and an Idea’s Weak Spots