The Korean consonant ㅎ is fascinating because its pronunciation isn't always stable. It changes depending on where it appears and what sounds surround it. If you've ever wondered why 좋다 sounds like [조타] or why 놓는 becomes [논는], this guide will explain everything.
1. Aspiration: Adding a breath of air
When ㅎ meets a plain consonant (ㄱ, ㄷ, ㅂ, ㅈ), it transfers its aspiration feature, making that consonant sound stronger and breathier.
👉 Examples:
좋다 ➡ [조타] ㄷ becomes aspirated ㅌ
놓고 ➡ [노코] ㄱ becomes aspirated ㅋ
Rule: ㄱ ➡ ㅋ, ㄷ ➡ ㅌ, ㅂ ➡ ㅍ, ㅈ ➡ ㅊ when influenced by ㅎ.
2. Disappearing act between vowels
In casual or fast speech, ㅎ often weakens or disappears when it sits between vowels.
👉 Example:
좋아 ➡ [조아] ㅎ drops completely
Why? Because ㅎ is weak fricative, and intervocalic positions make it easy to lose.
3. Before nasals: Total drop
When ㅎ comes before a nasal sound (ㄴ, ㅁ), it usually vanishes.
👉 Example:
놓는 ➡ [논는] ㅎ disappears before ㄴ
This happens because nasals require a closed oral cavity, which conflicts with the airy nature of ㅎ.
4. Tense consonants resist change
If ㅎ is followed by a tense consonant (ㄲ, ㄸ, ㅃ, ㅆ, ㅉ), it disappears without affecting the tense consonant.
👉 Example:
좋다 + 쓸다 ➡ [조쓸다]
5. At the beginning: Strong or weak
At the start of a word, ㅎ is pronounced as [h], but its strength depends on speech style:
- Strong in careful speech
- Weak or dropped in rapid speech
Why does this happen?
These changes reflect Korean's preference for ease of articulation and feature spreading. Since ㅎ is a weak consonant, it often disappears or passes its aspiration to nearby sounds.
Position | Change | Example |
Before plain consonant | Adds aspiration | 놓고 → 노코 |
Between vowels | Drops | 좋아 → 조아 |
Before nasal | Drops | 놓는 → 논는 |
Before tense consonant | Drops | 좋다 + 쓸다 → 조쓸다 |
Word-initial | [h] or weak | 하다 |
