Liaison in Korean: Why Words Flow Together When You Speak

If you have ever looked at a Korean sentence, listened to it, and felt that the audio did not match the letters, you have met liaison. In Korean it is called 연음 (yeoneum), which roughly means "linked sound." It is the single most common pronunciation rule, and mastering it will instantly make your listening and speaking smoother.

The basic rule

When a syllable ends in a consonant and the next syllable starts with the silent ㅇ, the consonant slides over and is pronounced as the start of the next syllable.

• 한국어

  [hangugeo]

  the Korean language

• 음악

  [eumak]

  music

• 직업

  [jigeop]

  job, occupation

• 먹어요.

  [meogeoyo]

  I eat. / I'm eating.

한국어 is written han-guk-eo, but it is said hangugeo. 먹어요 is written meok-eo-yo, but it is said meogeoyo. Notice that a final ㄱ, which is an unreleased k at the end of a word, becomes a soft g when it links to a vowel. The same happens with ㄷ becoming d and ㅂ becoming b.

Liaison across particles

Korean attaches particles such as 이, 은, 을, and 에 directly to nouns. Many of these particles start with a vowel, so liaison happens constantly in real sentences.

• 책을 읽어요.

  [chaegeul ilgeoyo]

  I'm reading a book.

• 집에 가요.

  [jibe gayo]

  I'm going home.

• 사람이 많아요.

  [sarami manayo]

  There are a lot of people.

In 책을 you hear chaegeul, and in 집에 you hear jibe. Train your ear to expect this, and particles will stop sounding like mysterious new words.

Liaison with double batchim

When a syllable has two final consonants, the first one stays and the second one links.

• 앉아요.

  [anjayo]

  I sit. / Sit down. (casual polite)

• 젊은 사람

  [jeolmeun saram]

  a young person

• 값이 비싸요.

  [gapsi bissayo]

  The price is high.

The ㅇ and ㅎ exceptions

Two finals behave differently. A final ㅇ (ng) never moves, because ㅇ at the bottom is a real sound, not a placeholder.

• 고양이

  [goyangi]

  cat

• 영어

  [yeongeo]

  English (the language)

A final ㅎ usually disappears before a vowel instead of linking.

• 놓아요.

  [noayo]

  I put it down.

• 싫어요.

  [sireoyo]

  I don't like it. / No thanks.

Liaison between words

Inside a single word, or between a noun and its particle, liaison is automatic. Between two separate words, Koreans often pronounce the first word's final in its simplified form and then link it. That is why the separate phrase 맛없어요 (it tastes bad) sounds like madeopseoyo, while 맛있어요 (it's delicious) is more commonly pronounced masisseoyo (madisseoyo is also standard). Words formed with 있다 are a common exception that learners simply memorize.

• 맛있어요.

  [masisseoyo]

  It's delicious.

• 맛없어요.

  [madeopseoyo]

  It doesn't taste good.

• 멋있어요.

  [meosisseoyo]

  That's cool. / You look great.

Listening practice

• Take a sentence you like, read it once as written, then again as one flowing line without pauses.
• Mark every batchim that is followed by ㅇ. Each one is a place where sounds will link.
• Compare slow textbook audio with natural speech. The faster people speak, the more obvious liaison becomes.

Liaison is not an optional accent feature; it is how Korean is spoken by everyone, from news anchors to friends at a café. Start linking your sounds early, and your Korean will sound more natural from day one.