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19 strokes

警 — Police, Warning, Caution

N3
On: ケイ
Kun: いましめる

Meaning

Today, this article explores the kanji けい. This character is central to understanding Japanese concepts of safety, vigilance, and authority. It primarily conveys meanings like 'police,' 'to warn,' 'to guard,' 'caution,' and 'alarm.' You'll frequently encounter けい in words related to law enforcement, security, and any situation requiring alertness or a heads-up.

To understand けい, this section examines its structure. This kanji is a phono-semantic compound, meaning it combines a part suggesting its meaning with a part indicating its sound. The left side, ごん, means 'word' or 'speech.' This radical often appears in kanji related to communication or expression. So, the presence of ごん immediately hints at something being spoken or conveyed.

The right side of けい is けい, which means 'respect' or 'reverence.' While けい mainly contributes the 'kei' sound to けい, it also subtly links to its meaning. Consider how a 'warning' is often given out of 'respect' for someone's safety, or how 'police' are figures of 'respect' who issue warnings and guard. Thus, combining 'words' (ごん) with a sense of 'respect' or 'caution' (けい) leads to ideas like 'to warn,' 'to caution,' or 'to guard.' It's like conveying 'words of respectful caution.'

With 19 strokes, けい is a moderately complex character. It's a Jōyō kanji, meaning it's on the official list of characters for common use, typically learned in junior high school. This aligns with its JLPT N3 classification. Learning けい will significantly improve your comprehension of terms related to public safety and warnings in Japanese.

Readings

To use けい correctly across various contexts, understanding its readings is crucial. Like many kanji, けい has both On'yomi (Chinese-derived readings) and Kun'yomi (native Japanese readings).

On'yomi (音読み) — Chinese-derived readings

The main On'yomi for けい is ケイ (KEI). This is its most common reading and appears in the vast majority of compound words. You'll find it in terms related to police, warnings, and vigilance.

  • 警察けいさつ (keisatsu) — This is the most common word for 'police.' For example, a 'police officer' is 警察官けいさつかん.
  • 警告けいこく (keikoku) — This means 'warning' or 'admonition.' It's used for formal or serious cautions, such as a traffic warning or a warning against dangerous behavior.
  • 警戒けいかい (keikai) — Meaning 'vigilance,' 'caution,' or 'lookout.' You'll often hear this in phrases like 警戒けいかいする (keikai suru), 'to be on guard' or 'to be vigilant.'

Kun'yomi (訓読み) — Native Japanese readings

The primary Kun'yomi for けい is いましめる (imashimeru). This reading means 'to warn,' 'to admonish,' or 'to prohibit.' While it technically exists, it's considerably less common in modern Japanese as a standalone verb using けい compared to its On'yomi compounds. In practice, you are much more likely to encounter いましめる (imashimeru) with the kanji かい for similar meanings.

  • 警めるいましめる (imashimeru) — Although grammatically correct, this verb form is quite rare in everyday conversation. Its meaning is 'to warn' or 'to admonish,' similar to the On'yomi word 警告けいこく. However, you'll almost always see 警告けいこく or いましめる in contemporary usage.

Common Words & Compounds

The kanji けい combines with other characters to form many important words, especially in areas of public safety, security, and warnings. Let's look at some common compounds, grouped by theme:

Police & Security Related:

  • 警察けいさつ (keisatsu) — Police. This is the fundamental term referring to the law enforcement agency.
  • 警官けいかん (keikan) — Police officer. This refers to an individual police officer.
  • 警備けいび (keibi) — Security, guard. Often used for private security or guards, like 警備員けいびいん (keibiin), a security guard.
  • 警備会社けいびがいしゃ (keibi gaisha) — Security company. A company that provides security services.
  • 巡警じゅんけい (junkei) — Patrol (police). This refers to the act of patrolling by police officers.

Warning & Alarm Related:

  • 警告けいこく (keikoku) — Warning, admonition. A serious notification of potential danger or consequences, such as a 交通警告こうつうけいこく (kōtsū keikoku, traffic warning).
  • 警報けいほう (keihō) — Alarm, warning (e.g., weather, disaster). This typically refers to an official or automatic warning system, like a 津波警報つなみけいほう (tsunami keihō, tsunami warning).
  • 警戒けいかい (keikai) — Vigilance, caution, lookout. This describes the state of being watchful and careful.
  • 警鐘けいしょう (keishō) — Alarm bell, warning bell. This term is often used figuratively to mean "sounding the alarm" about a serious issue.
  • 防災警報ぼうさいけいほう (bōsai keihō) — Disaster prevention alarm. A warning issued for natural disasters.

Other Useful Compounds:

  • 警視庁けいしちょう (keishichō) — Metropolitan Police Department (Tokyo). This is the police force of Tokyo.
  • 警句けいく (keiku) — Epigram, aphorism (often a cautionary one). A concise, often witty statement, sometimes conveying a warning.
  • 警護けいご (keigo) — Guard, escort, bodyguard. The act of protecting someone.

Example Sentences

Keisatsu wa machi no anzen o mamotteimasu.

The police protect the safety of the town.

Michi ni ochiteiru mono ni keikai shite kudasai.

Please be cautious of things fallen on the road.

Sensei wa watashitachi ni jikan o mamoru yō ni keikoku shimashita.

The teacher warned us to be on time.

Yakan no keibi wa totemo jūyō desu.

Nighttime security is very important.

Saigai no keihō ga nattara, sugu ni hinan shite kudasai.

If a disaster warning sounds, please evacuate immediately.

Keisatsukan ga fushinsha ni keikai suru yō yobikakete imasu.

Police officers are calling for vigilance against suspicious persons.

Kare wa fuchūi na hatsugen ni tai shite keishō o narashimashita.

He sounded the alarm against careless remarks.

Chiiki no anzen o takameru tame, jūmin-tachi wa jishuteki na keibi patorōru o okonatteimasu.

To enhance community safety, residents are conducting voluntary security patrols.

Memory Tip

You can more easily remember けい by connecting its components through a simple story. The left side is ごん (word, speech), and the right side is けい (respect, reverence). Imagine a situation where someone needs to be warned or guarded. How do you do it? You use "words" (ごん) to give a "respectful" (けい) warning or to establish caution. Think of a police officer (警察) who speaks with respect and authority, delivering words of caution to maintain peace. The 'words' part reminds you that warnings are often spoken, and the 'respect' part highlights the seriousness and carefulness involved in policing or cautioning. So, remember it as "Words of Respect = Warning/Police."

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