Chapter 15
Common Sound Changes
Korean pronunciation often changes in connected speech. These changes are predictable and very common, especially around ㄴ/ㄹ and batchim (final consonants).
ㄴ ↔ ㄹ interactions (very common)
When ㄴ and ㄹ meet, they often change to make pronunciation smoother. Learn these two patterns first—they appear everywhere.
| Pattern | Often becomes | Example (written → sounds like) | |
|---|---|---|---|
| ㄴ + ㄹ | ㄹ + ㄹ | 신라 → sill-a, 한류 → hall-yu | |
| ㄹ + ㄴ | ㄹ + ㄹ | 설날 → seol-lal, 물난리 → mul-lal-i (approx.) |
Shortcut: if you see ㄴ and ㄹ side-by-side (in either order), try reading it as ㄹㄹ.
Linking before ㅇ (연음)
When the next syllable starts with ㅇ, the batchim sound usually links to the next syllable instead of stopping.
| Written | Breakdown | Often sounds like | |
|---|---|---|---|
| 먹어 | 먹 + 어 | meo-geo | |
| 한국어 | 한 + 국 + 어 | han-gu-geo | |
| 옷을 | 옷 + 을 | o-seul / o-teul (varies) | |
| 밥을 | 밥 + 을 | ba-beul |
Batchim outcomes (final sound groups)
Many final consonants collapse into a small set of ending sounds. This is why different letters can sound identical at the end of a syllable.
| Final sound | Ends like | Common letters | |
|---|---|---|---|
| ㄱ-group | k | ㄱ, ㄲ, ㅋ | |
| ㄴ-group | n | ㄴ | |
| ㄷ-group | t | ㄷ, ㅅ, ㅆ, ㅈ, ㅊ, ㅌ, ㅎ (often) | |
| ㄹ-group | l | ㄹ | |
| ㅁ-group | m | ㅁ | |
| ㅂ-group | p | ㅂ, ㅍ | |
| ㅇ-group | ng | ㅇ |
Very frequent outcome rules (starter set)
You don’t need every rule now. These are the ones you’ll hear constantly in everyday speech.
| Rule | Example (written) | Often sounds like | |
|---|---|---|---|
| ㅎ weakens before vowels/sonorants | 좋아 | jo-a (ㅎ becomes very soft) | |
| ㅂ + ㄴ/ㅁ → ㅁ (nasalization) | 합니다 | ham-ni-da | |
| ㄱ + ㄴ/ㅁ → ㅇ (nasalization) | 한국말 | han-gung-mal | |
| ㄷ + ㄴ/ㅁ → ㄴ (nasalization) | 듣는 | deun-neun |
Quick practice
Read the written form first, then read the 'sounds like' form. Try to keep it natural and connected.
| Written | Sounds like (approx.) | Focus | |
|---|---|---|---|
| 신라 | sill-a | ㄴ+ㄹ → ㄹㄹ | |
| 설날 | seol-lal | ㄹ+ㄴ → ㄹㄹ | |
| 밥을 | ba-beul | Linking before ㅇ | |
| 합니다 | ham-ni-da | ㅂ → ㅁ before ㄴ | |
| 한국말 | han-gung-mal | ㄱ → ㅇ before ㅁ |
Chapter goal: recognize these patterns while listening. Perfect pronunciation comes later—first build the habit of reading connected speech.