CYChengyu Dictionary

Chengyu meaning

流水不腐 (liú shuǐ bù fǔ)

movement prevents stagnation

Plain Answer

Source: Traditional flow-and-renewal maxim in Chinese usage. Treated here as classical story; read it first as a sentence-level judgment.

Core meaning: 流水不腐 means movement prevents stagnation: Used to say that regular movement, renewal, or practice keeps a person, system, or habit healthy. It warns against stillness that becomes decay.

Practice this meaningRead the story
Label
negative / common formal
Best objects
language practice, team process, change boundary
Do not use when
Do not use 流水不腐 for a scene that only shares one surface word with the meaning. If the problem is closer to 水滴石穿 or the contrast points toward 根深蒂固, choose that nearby entry instead of stretching this one.

Use: Use 流水不腐 when the language practice sentence shows the object, cause, and tone clearly. Avoid: Avoid 流水不腐 when the sentence only sounds related, lacks evidence, or needs a plainer word.

language practice流水不腐，学习语言也一样，长时间不用就会生疏。Liúshuǐbùfǔ, xuéxí yǔyán yě yíyàng, cháng shíjiān bú yòng jiù huì shēngshū.Flowing water does not decay; language learning is similar, because long disuse makes skills rusty.

Next: Read the examples, then compare 水滴石穿 before practicing 流水不腐 in the focused quiz.

Often studied with: 水滴石穿, 温故知新, 知行合一

Read This First

流水不腐 is introduced here through a classical story tradition retold for modern learners; the source label is Traditional flow-and-renewal maxim in Chinese usage, and the page separates that background from modern sentence choice.

流水不腐 means movement prevents stagnation. The important first reading is Used to say that regular movement, renewal, or practice keeps a person, system, or habit healthy. It warns against stillness that becomes decay. This is a negative phrase in normal use, so the sentence must show the judgment clearly.

Use 流水不腐 when the object, cause, and tone match examples such as language practice, team process, change boundary; then compare 水滴石穿 and 温故知新 before writing your own sentence.

Avoid 流水不腐 when the sentence only shares a broad topic, when the tone would be unfair to the person being described, or when a plainer word would be clearer than a chengyu.

Start with this cue: language practice plus a visible reason.

Meaning and Translation Notes

Used to say that regular movement, renewal, or practice keeps a person, system, or habit healthy. It warns against stillness that becomes decay.

Literal meaning

flowing water does not rot

  • 流 / flow
  • 水 / water
  • 不 / not
  • 腐 / rot

English equivalents

  • movement prevents stagnation plain

    The clearest modern explanation.

  • use keeps things alive near

    Works for skills, habits, and systems.

  • flowing water does not decay plain

    Keeps the literal image visible.

How To Use It

Use 流水不腐 when the reader can see why movement prevents stagnation is the exact judgment, not just the topic. A strong sentence names the actor, the thing being judged, and the evidence that makes this idiom more precise than an ordinary adjective.

  • Use it for habits, skills, organizations, tools, routines, or thinking that stay healthy through use.
  • The phrase is preventive: it often warns before decay becomes visible.
  • It is stronger when the sentence shows what kind of movement or renewal is needed.

Common Mistakes

Do not use 流水不腐 for a scene that only shares one surface word with the meaning. If the problem is closer to 水滴石穿 or the contrast points toward 根深蒂固, choose that nearby entry instead of stretching this one.

  • Do not use it for random change; the flow should maintain life, function, or freshness.
  • Do not confuse it with 水滴石穿, which emphasizes cumulative force rather than anti-stagnation.

Wrong Use Clinic

The most useful check is often the phrase you should reject.

  1. The learner wants to sound more idiomatic but has only a broad topic match for 流水不腐.

    The sentence drops in 流水不腐 without showing the cause, object, or tone that would make the idiom necessary.

    Fix: Rewrite the sentence so the evidence for movement prevents stagnation appears before or after the phrase.

    流水不腐 fails in this case because a chengyu is not decoration; it must name the exact judgment the sentence is making.

    Compare shui di shi chuan

  2. The learner wants to say the opposite or a neighboring idea and chooses 流水不腐 because it feels familiar.

    The sentence uses 流水不腐, but the described situation points to a different cause, time point, or social attitude.

    Fix: Compare the sentence with 根深蒂固 and choose the phrase whose boundary explains the situation with less force.

    流水不腐 becomes misleading when the nearby phrase would identify the real problem more cleanly.

    Compare gen shen di gu

  3. The learner has the right meaning area for 流水不腐 but ignores register and emotional force.

    The sentence uses 流水不腐 directly about a person, yet gives no softening context or evidence for such a preventive and practical judgment.

    Fix: Add the observed behavior first, or choose 温故知新 if the sentence needs a gentler learning path.

    流水不腐 can sound heavier than a short English gloss. The reader needs enough context to see why the tone is fair.

    Compare wen gu zhi xin

  4. The learner remembers the origin image of 流水不腐 but applies it to the wrong object.

    The sentence names an image or story detail, but the real object being judged would be better explained by another chengyu.

    Fix: Name the object first. If the object points toward 刻舟求剑, use that contrast instead.

    流水不腐 should follow the judgment, not the most memorable image. Story memory is useful only when it supports the sentence-level decision.

    Compare ke zhou qiu jian

Chengyu Often Studied Together

Use these clusters to build sentence-level judgment instead of memorizing a single gloss.

  1. 流水不腐 with nearby learner choices

    流水不腐 is often studied beside 水滴石穿 and 温故知新 because the words share a theme while asking the learner to judge a different cause, tone, or timing.

    老师先让学生解释流水不腐，再比较水滴石穿和温故知新，这样不会只凭英文近义词选答案。

    shui di shi chuanwen gu zhi xin

  2. 流水不腐 with contrast checks

    流水不腐 becomes easier to use when it is contrasted with 知行合一 and 根深蒂固; the contrast forces the writer to decide whether the sentence is praise, warning, correction, or neutral description.

    写作练习里先用流水不腐造句，再换成知行合一，观察判断方向怎样改变。

    zhi xing he yigen shen di gushui di shi chuan

  3. 流水不腐 in example-building drills

    流水不腐 should be practiced with 水滴石穿 and 知行合一 because examples reveal whether the learner is choosing by meaning, tone, or only by a remembered image.

    课堂上先用流水不腐写一个有证据的句子，再换成水滴石穿或知行合一说明判断为什么改变。

    shui di shi chuanzhi xing he yiwen gu zhi xin

  4. 流水不腐 in story and source review

    流水不腐 links best with 温故知新 and 根深蒂固 when the learner is checking whether a source image truly supports a modern sentence.

    复习出处时，不要只背流水不腐的故事，还要比较温故知新，看哪个成语更能解释现代句子。

    wen gu zhi xingen shen di gushui di shi chuan

Learner Guide

Use these notes when deciding whether this chengyu fits a real sentence.

Use 流水不腐 when motion, use, or renewal prevents decline. The phrase fits study habits, team routines, organizational systems, physical practice, and mental flexibility. It is especially useful when the problem would appear after neglect.

Movement prevents stagnation is the clearest English. Use keeps things alive is warmer and works for skills or tools. Flowing water does not decay keeps the original image, but an English sentence often needs an explanation after it.

Do not use it for constant change without purpose. A team that changes direction every week is not necessarily 流水不腐. The movement should maintain function, freshness, or health. The phrase values circulation, not noise.

A strong sentence names what becomes stale. A language skill, procedure, instrument, relationship, or idea should appear in the sentence. Then name the movement that keeps it alive: practice, review, use, repair, conversation, or renewal.

Before using 流水不腐, write the plain English idea first. If the plain sentence already says everything naturally, the chengyu must add a sharper judgment, cultural image, or tone. If it does not add one of those, leave the plain wording alone.

A good 流水不腐 sentence contains an object and evidence. The object is the person, plan, habit, result, or scene being judged. The evidence is the reason the phrase fits. Without both parts, the idiom may look learned but feel empty.

Compare 流水不腐 with 水滴石穿 and 根深蒂固 before finalizing a sentence. The goal is not to memorize synonyms; the goal is to reject the wrong phrase for a clear reason. That rejection is what turns recognition into usable knowledge.

When teaching or self-reviewing 流水不腐, ask the learner to mark source, meaning, use case, wrong case, and one example. If any mark is missing, return to the entry section that supplies it rather than guessing from the headword alone.

language practice is the first test zone for 流水不腐, but it is not the only possible use. Before using the phrase, name the speaker, the object being judged, and the nearest tested context: language practice, team process, change boundary, usage boundary, misuse boundary, comparison check, context setup, teacher correction. Then choose among movement prevents stagnation, use keeps things alive, flowing water does not decay as translation candidates and reject at least one candidate out loud. A useful final check is to compare the sentence with shui-di-shi-chuan and wen-gu-zhi-xin; if one of those nearby entries explains the situation with less strain, the nearby phrase is the better learner choice.

When 流水不腐 is translated as movement prevents stagnation, the English should still preserve the phrase's tone. Keep preventive and practical and the effort use area visible when the audience is still learning the idiom. If a short translation hides the warning "Do not use it for random change; the flow should maintain life, function, or freshness.", choose a fuller English explanation instead. This matters because the strongest chengyu pages should help readers decide when not to use the most convenient English equivalent.

Example Sentences

Each example labels the situation so you can choose a natural English translation.

language practice

流水不腐，学习语言也一样，长时间不用就会生疏。

Liúshuǐbùfǔ, xuéxí yǔyán yě yíyàng, cháng shíjiān bú yòng jiù huì shēngshū.

Flowing water does not decay; language learning is similar, because long disuse makes skills rusty.

team process

这个团队每月复盘一次，相信流水不腐，制度也需要更新。

Zhège tuánduì měi yuè fùpán yí cì, xiāngxìn liúshuǐbùfǔ, zhìdù yě xūyào gēngxīn.

The team reviews once a month, believing that movement prevents stagnation and systems also need renewal.

change boundary

流水不腐不是盲目变化，而是让该运转的东西持续运转。

Liúshuǐbùfǔ bú shì mángmù biànhuà, ér shì ràng gāi yùnzhuǎn de dōngxi chíxù yùnzhuǎn.

Movement preventing stagnation does not mean blind change; it means keeping what should operate in motion.

usage boundary

只有原因和语气都清楚时，这句话才适合用流水不腐。

zhi you yuan yin he yu qi dou qing chu shi zhe ju hua cai shi he yong liu shui bu fu

Only use 流水不腐 when the cause and tone are both clear, not just because the topic feels nearby.

misuse boundary

如果只是普通情况，不要为了显得有文化而硬说流水不腐。

ru guo zhi shi pu tong qing kuang bu yao wei le xian de you wen hua er ying shuo liu shui bu fu

If the situation is ordinary, do not force 流水不腐 just to make the sentence sound more cultured.

comparison check

比较近义成语以后，再决定这里是不是应该写流水不腐。

bi jiao jin yi cheng yu yi hou zai jue ding zhe li shi bu shi ying gai xie liu shui bu fu

After comparing nearby chengyu, decide whether 流水不腐 is really the phrase the sentence needs.

context setup

这段话先说明对象和原因，所以流水不腐读起来不突兀。

zhe duan hua xian shuo ming dui xiang he yuan yin suo yi liu shui bu fu du qi lai bu tu wu

The passage names the object and cause first, so 流水不腐 does not feel abrupt.

teacher correction

老师让学生先解释为什么不用别的词，再用流水不腐造句。

lao shi rang xue sheng xian jie shi wei shen me bu yong bie de ci zai yong liu shui bu fu zao ju

The teacher asks students to explain why another phrase would be wrong before writing a sentence with 流水不腐.

Story and Cultural Context

流水不腐 uses a physical observation as a moral and practical model. Water that keeps flowing is less likely to become foul, while trapped water can decay. The phrase entered broader use because many human activities behave in a similar way: skills weaken when unused, institutions become rigid when never examined, and relationships can cool when no one maintains them. Modern speakers use it for study, health habits, governance, work routines, and personal growth. The image is not a command to change everything; it is a reminder that living systems need circulation. 流水不腐 gives learners a physical model for living systems. Water that flows has circulation; water that remains trapped can become stale. The same pattern appears in language practice, organizations, personal habits, tools, and ideas. Use keeps a skill available. Review keeps a process from hardening. Conversation keeps a relationship from going silent. The phrase is not about novelty for its own sake. Its value is continuity through motion: the thing remains healthy because it keeps moving in the way it was meant to move. For this entry, the origin note is only the beginning of the explanation. The useful question is why 流水不腐 survived as a portable judgment rather than as a decorative allusion. The classical story route gives the reader an image, but the modern sentence must still prove its own fit. A learner should ask three things: what concrete object is being judged, what evidence in the sentence supports that judgment, and what tone the phrase adds that a plain English adjective would not add. This is why the page tests 流水不腐 through language practice, team process, change boundary, usage boundary, misuse boundary; each context changes the pressure on the phrase and shows whether the idiom is acting as praise, warning, neutral description, or criticism. The story or usage background also has a translation boundary. 流水不腐 can point toward movement prevents stagnation, use keeps things alive, flowing water does not decay, but those English choices are not interchangeable. One version may preserve the image, another may sound natural in a classroom answer, and another may be safer in a workplace or essay sentence. The entry therefore treats public references as source cards, not as a paragraph order to imitate. Headword checks, story labels, and English equivalents are separated first; only after that are they rebuilt into the learner path used here: answer, label, examples, wrong-use clinic, comparison, story, and practice. The most common failure is overextension. Because 流水不腐 has a memorable surface, learners may reach for it whenever a topic feels close. The better habit is to compare it with 水滴石穿 and 温故知新 and with 根深蒂固 and 刻舟求剑 before writing. If the rejected phrase is hard to reject, the sentence probably has not supplied enough evidence. If the rejected phrase is easy to reject, the learner can explain the boundary and use 流水不腐 with confidence. That is the practical purpose of the origin section: it turns cultural memory into a sentence-level decision instead of leaving the reader with a story and no next action.

Learning point: Healthy continuity often depends on regular movement and renewal.

Open the dedicated story page

Editorial Notes

These notes turn the entry into a decision path, not a loose definition.

First answer before details

流水不腐 should first be read as a decision about movement prevents stagnation, not as a collectible story label. The classical story helps memory, but the reader's real task is to decide whether the modern sentence is making a negative judgment with enough evidence. Start with the object being described, then ask what happened, who is being judged, and whether the tone is fair. If those details are missing, the idiom will feel like learned decoration rather than useful Chinese. This first-answer rule also helps teachers and translators: they can explain the phrase quickly before deciding whether a longer story, comparison, or correction block is needed.

Example clinic

The examples for 流水不腐 deliberately cover language practice, team process, change boundary, usage boundary, misuse boundary because a learner needs more than one successful sentence before the phrase becomes usable. Read the Chinese sentence, then explain in plain English why this phrase is more precise than a simple adjective or loose translation. A strong example names the context, shows the evidence, and makes the tone visible. A weak example merely places the chengyu near a related topic. This habit prevents a common error: remembering the literal image but forgetting the social judgment carried by the phrase. When the example feels forced, return to the meaning line and choose a plainer wording.

Comparison boundary

Before using 流水不腐, compare it with 水滴石穿 and 温故知新 and, when possible, with 根深蒂固 and 刻舟求剑. The comparison is not a synonym game. Nearby chengyu often share effort, caution, wisdom, or evaluation as a topic, while differing in cause, timing, and emotional force. A good learner sentence can explain why the rejected phrase fails. If that explanation is impossible, the chosen idiom is probably too loose. This is also the cleanest internal-link reason: the next page exists because it helps the reader reject a tempting but wrong choice. The comparison should leave a reusable rule, not merely another link to click.

Wrong-use trigger

流水不腐 should be rejected when the sentence lacks an object, hides the reason for the judgment, or uses the idiom only because it sounds literary. The safest correction is to rewrite the sentence in plain English first, then add the chengyu only if it sharpens the meaning. If the tone becomes unfair, choose a gentler nearby phrase. If the source image is memorable but the modern object does not match, use the story only as background and do not force the idiom into the sentence. This wrong-use trigger is what keeps the entry from becoming a long but vague dictionary page.

Source synthesis note

流水不腐 uses public references as checkpoints rather than as a structure to copy. One source may help with the headword, another with a story or image, and another with English translation range. The page then rebuilds those checks into its own learner order: short answer, label, examples, misuse, collocation, guide, story, and practice. This matters because a single-source paraphrase would give readers a familiar-looking article but not a better learning tool. The editorial value here is the decision path: what to use, what not to use, what to compare, and how to test the phrase in a new sentence.

Practice This Decision

Answer a focused quiz question, then come back to the examples and misuse clinic if the near phrase feels tempting.

Start focused quizReview mistakes first