Why isn't Korean read as spelled? 받침 (batchim) sound rules made easy

You learned Hangul. You read 감사합니다 (gamsahamnida) — "thank you" — one letter at a time. Then a Korean person says it: gam-sa-ham-ni-da. Where did the m sound come from?

In the tables below, square brackets [ ] show the real pronunciation.

Rule 1: why does the 받침 move to the next block?

This is called linking (연음, yeoneum). Sometimes a block ends in a consonant, and the next block starts with ㅇ. At the start of a block, ㅇ has no sound. So the consonant moves into that empty place.

Some blocks have two 받침, like ㄺ in 읽. Here the first one stays, and the second one moves: 읽 + 어 → 일 + 거.

If a word sounds like it starts with a different letter, linking is usually the reason.

Rule 2: why does 합니다 sound like 함니다?

This is called nasalization (비음화, bieumhwa). "Nasal" means the sound goes through your nose, like m, n and ng. A ㄱ, ㄷ or ㅂ sound at the end of a block changes when the next block starts with ㄴ or ㅁ.

• ㄱ sound → ㅇ (ng)
• ㄷ sound → ㄴ (n)
• ㅂ sound → ㅁ (m)

This is why every 합니다 ending sounds like -ham-ni-da. Your mouth is already getting ready for the ㄴ.

A similar rule: ㄴ next to ㄹ often becomes ㄹ. 신라 (Silla, an old Korean kingdom) is pronounced [실라]. 연락 (yeollak) — "contact" — is pronounced [열락].

Rule 3: why is 같이 said like 가치?

This is called palatalization (구개음화, gugaeeumhwa). When a ㄷ or ㅌ 받침 meets 이, it changes to ㅈ or ㅊ.

You will hear 같이 ("together") every day. For example: 같이 가요 (gachi gayo) — "Let's go together."

Rules 4 and 5: the silent ㅎ and the strong sounds

ㅎ at the end of a block becomes silent before a vowel.

Next to ㄱ, ㄷ or ㅈ, the ㅎ adds a strong breath of air. So 좋다 is [조타], 좋고 is [조코], and 그렇지 is [그러치].

The last rule is tensing (경음화, gyeongeumhwa). After a ㄱ, ㄷ or ㅂ sound, the next ㄱ, ㄷ, ㅂ, ㅅ or ㅈ often becomes tense. It sounds like a double letter. 학교 sounds like [학꾜], 식당 like [식땅], and 잡지 like [잡찌].

Where you will hear these rules

Here is what these rules mean in daily life:

• At a restaurant: you will hear 국물 (gungmul) — "soup" — as [궁물], not "guk-mul".
• Making plans: 같이 is always [가치]. Nobody says "gat-i".
• Saying you like something: 좋아요 is [조아요]. The ㅎ is only on paper.
• Thanking someone: every 감사합니다 ends in -ham-ni-da.

Easy mistakes

• Reading one block at a time. If you stop between blocks, the rules can't work. Say the whole word in one breath.
• Trusting romanization for tensing. The official romanization does not show tensing. 학교 is written hakgyo, and 식당 is sikdang. But you hear a stronger sound.
• Saying the ㅎ in 좋아요. "Jo-ha-yo" sounds like a machine reading letters.

Why does Korean do this?

The main reason is smooth speech. Saying ㅂ just before ㄴ takes extra effort, so the mouth takes an easier path. These rules describe that path.

Here is something a dictionary may not tell you. For 맛있어요, the standard pronunciation is [마디써요]. [마시써요] is also officially allowed. In real life, almost everyone says [마시써요]. The official rules and daily speech are not always the same.

Apps show the letters, but real Korean speech happens between the blocks. When you hear it, dramas and songs become much easier to understand.

Quick check

1. How do you say 먹어요? → linking: [머거요]
2. How do you say 국민 ("citizens")? → nasalization, ㄱ before ㅁ: [궁민]
3. How do you say 놓아요 ("put down")? → the ㅎ is silent: [노아요]