A2 verb Neutral #6,000 most common 3 min read

澄む

sumu /sɯmɯ/
Practice it Notes & Tips

Overview

The Japanese verb '澄む' (sumu) is an intransitive verb that primarily means 'to become clear,' 'to be clear,' or 'to be transparent.' It is most commonly used in reference to liquids like water, or to the air. It describes a state of purity and lack of turbidity.

Nuances and Usage:

  1. 1Water (水が澄む - mizu ga sumu): This is perhaps the most frequent usage. When water '澄む' (sumu), it means it's free of sediment, dirt, or anything that would make it murky. Think of a clear mountain stream, a well that has settled, or a pond after a period of no disturbance. It evokes a sense of cleanliness and often, refreshing coolness. For example, '川の水が澄んでいる' (kawa no mizu ga sunde iru) means 'The river water is clear.'
  1. 1Air (空気が澄む - kūki ga sumu): When the air '澄む' (sumu), it means the atmosphere is free of smog, dust, or haze, leading to excellent visibility. This often happens after rain, on a crisp autumn day, or in high altitudes. '今朝は空気が澄んでいて、遠くまで見えた' (kesa wa kūki ga sunde ite, tōku made mieta) translates to 'The air was clear this morning, and I could see far away.'
  1. 1Sound (音が澄む - oto ga sumu): Less common, but '澄む' can also describe sound. When a sound '澄む' (sumu), it means it's pure, clear, and without distortion or muddiness. This might refer to a bell, a musical instrument, or a singing voice that is particularly crisp and resonant. '彼女の歌声は澄んでいた' (kanojo no utagoe wa sunde ita) means 'Her singing voice was clear.'
  1. 1Eyes/Mind (目が澄む - me ga sumu / 心が澄む - kokoro ga sumu): Metaphorically, '澄む' can describe eyes that are clear and bright, often implying innocence, sincerity, or keen perception. When a mind or heart '澄む' (sumu), it suggests a state of peace, purity, or unclouded thought, free from worldly distractions or negative emotions. This usage is more poetic.

Grammatical Forms:

  • Dictionary form: 澄む (sumu)
  • Masu form: 澄みます (sumimasu)
  • Te form: 澄んで (sunde)
  • Past tense: 澄んだ (sunda)
  • Negative: 澄まない (sumanai)
  • Continuous/Resultant state: 澄んでいる (sunde iru) - often used to describe the current clear state (e.g., '水が澄んでいる' - the water is clear).

Related Expressions:

  • 澄み切った (sumikitta): This is an adjective derived from '澄む,' meaning 'crystal clear' or 'perfectly clear.' It emphasizes an extreme degree of clarity, e.g., '澄み切った青空' (sumikitta aozora - a crystal clear blue sky).
  • 濁る (nigoru): This is the antonym of '澄む,' meaning 'to become muddy,' 'to become turbid,' or 'to be cloudy.'

Understanding '澄む' provides insight into how Japanese describes clarity and purity in both a literal and a metaphorical sense, reflecting an appreciation for pristine natural states and inner tranquility.

Examples

1

水が澄む

Refers to water becoming clear.

Mizu ga sumu

2

空気が澄む

Refers to air becoming clear or fresh.

Kūki ga sumu

3

心が澄む

Refers to one's mind or heart becoming clear and tranquil.

Kokoro ga sumu

4

声が澄む

Refers to a voice becoming clear and pure in tone.

Koe ga sumu

5

澄んだ空気

Describes clear air.

Sunda kūki

Common Collocations

水が澄む
空気が澄む
心が澄む
目が澄む

Often Confused With

澄む vs w

80+ WORDS

Grammar Patterns

p1 p2 p3

How to Use It

The verb '澄む' (sumu) is an intransitive verb meaning 'to become clear,' 'to be clear,' or 'to be transparent.' It is most commonly used to describe the state of liquids (especially water), air, or skies. For example, '水が澄む' (mizu ga sumu) means 'the water becomes clear,' and '空気が澄む' (kūki ga sumu) means 'the air becomes clear.' It can also be used metaphorically to describe a person's heart or mind, as in '心が澄む' (kokoro ga sumu), implying a state of mental clarity or purity. While '澄む' primarily refers to a natural process of clarification, it can also be used in a more active sense to describe something that makes an environment clear, although in such cases, related transitive verbs like '澄ます' (sumasu, to clear up, to make clear) are often preferred. For instance, while you might say '水が澄んだ' (mizu ga sunda, the water cleared), if you are actively performing an action to make it clear, you would use '水を澄ます' (mizu o sumasu). The particle 'が' (ga) is typically used with '澄む' to indicate the subject that is becoming clear. The past tense '澄んだ' (sunda) is frequently used to describe a state that has been achieved, such as '澄んだ水' (sunda mizu, clear water) or '澄んだ空気' (sunda kūki, clear air). It is not typically used for objects that are inherently transparent, like glass; for those, words like '透明' (tōmei) are more appropriate.

Common Mistakes

One common mistake is confusing 澄む (sumu) with other verbs that sound similar but have different meanings. For example, 済む (sumu) means 'to finish' or 'to be completed,' as in 仕事が済む (shigoto ga sumu - 'work finishes'). Another is 住む (sumu), which means 'to live' or 'to reside,' as in 日本に住む (Nihon ni sumu - 'to live in Japan'). While all three are pronounced 'sumu,' their kanji and contexts are distinct. Pay close attention to the kanji to differentiate them. Also, remember that 澄む specifically refers to the clearing of liquids or air, not general clarity or understanding in other contexts.

Tips

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Usage Contexts of '澄む' (sumu)

'澄む' primarily describes things becoming clear, transparent, or pure. It's most commonly used for natural elements like water, air, or sound. It implies a state of being free from impurities, murkiness, or disturbance. For example, you might say '水が澄む' (mizu ga sumu - the water becomes clear) or '空気が澄む' (kūki ga sumu - the air becomes clear). It can also be used metaphorically for a voice becoming clear or a mind becoming serene. Keep in mind that while it means 'to become clear,' it doesn't typically apply to things like a schedule becoming clear or an explanation becoming clear; for those, different verbs like 'はっきりする' (hakkiri suru) or '明確になる' (meikaku ni naru) would be used.

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Distinguishing '澄む' from similar verbs

Be careful not to confuse '澄む' (sumu - to become clear) with similar-sounding verbs. For example, '住む' (sumu - to live) and '済む' (sumu - to finish/be settled) are homophones but have entirely different meanings and kanji. Context is key! When you see '澄む,' think about clarity, transparency, or purity. Also, consider the nuance between '澄む' and 'きれいになる' (kirei ni naru - to become clean/beautiful). While '澄む' often implies cleanliness, its core meaning is about visual or auditory clarity, whereas 'きれいになる' is broader and can refer to tidiness, beauty, or a general state of being clean. For example, a messy room can become 'きれいになる,' but not usually '澄む.'

Word Origin

200+ WORDS origin history.

Cultural Context

The word '澄む' (sumu) holds significant cultural resonance in Japan, deeply intertwined with aesthetic principles and spiritual concepts. In Japanese art and philosophy, clarity and transparency, often associated with water or air, symbolize purity, tranquility, and a state of being unburdened by worldly impurities. This concept is evident in traditional Japanese gardens, where clear ponds reflect the sky and surrounding nature, inviting contemplation. In literature, a '澄んだ心' (sumu kōkoro), or clear heart/mind, signifies an unclouded perspective and emotional serenity, often attained through meditation or communion with nature. The sound of '澄んだ音' (sunda oto), a clear sound, is also highly valued, especially in traditional music and the chiming of temple bells, which are believed to purify the listener. The idea of '澄む' extends to seasonal changes, such as the clear autumn skies after the summer rains, which evoke a sense of refreshment and renewal. This appreciation for clarity reflects a broader cultural emphasis on harmony, subtlety, and the ephemeral beauty of the natural world.

Memory Tip

Visualize a clear, pristine lake (澄んだ湖 - sunda mizuumi) or fresh, crisp air (澄んだ空気 - sunda kūki) to remember 澄む (sumu), meaning 'to become clear' or 'transparent' for water or air. The kanji 澄 itself has components related to water and purity, reinforcing its meaning.

Frequently Asked Questions

4 questions

The Japanese word you're looking for is '澄む' (sumu).

Certainly! '澄む' can be used in phrases like '水が澄む' (mizu ga sumu), meaning 'the water becomes clear,' or '空気が澄む' (kūki ga sumu), meaning 'the air becomes transparent/clean.' It evokes a sense of purity and clarity.

'澄む' is typically used to describe natural elements like water, air, or even sound becoming clear, pure, or transparent. For instance, after a rain, the air might '澄む', or a quiet pond's water might '澄む'.

That's a great question! '澄む' specifically implies a state of being transparent, pure, or unclouded, often in a natural and serene sense. It's different from words like '明らか' (akiraka) which means 'obvious' or 'clear in meaning,' or '透明' (tōmei) which means 'transparent' in a more general, often physical sense like glass. '澄む' often carries a more poetic or sensory nuance of freshness and purity.

Test Yourself

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空気が____と、星がよく見える。

Correct! Not quite. Correct answer:
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川の水が____、魚が泳いでいるのが見えた。

Correct! Not quite. Correct answer:
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心が____と、新しいアイデアが浮かぶ。

Correct! Not quite. Correct answer:

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