Korean Pronunciation Rules: Lessons and Practice

Key Facts

• Korean has eight main sound-change rules, and each has its own subsection of lessons.
• Liaison is the most useful rule: a final consonant moves to a following vowel, so 책이 is [채기].
• Nasalization changes ㄱ, ㄷ and ㅂ before ㄴ or ㅁ, as in 합니다 [함니다].
• Tensification makes ㄱ, ㄷ, ㅂ, ㅅ and ㅈ tense after an unreleased stop, as in 학교 [학꾜].
• Revised Romanization records many of these changes but not all, so romanization alone is unreliable.
• The rules come from the Standard Pronunciation Rules (표준 발음법) of the National Institute of Korean Language (국립국어원).

Last updated: 2026-10-08. The Korean text, romanization and audio scripts in this section are generated drafts that still await review by a Korean specialist.

What Are Korean Pronunciation Rules?

Korean pronunciation rules are the regular changes that turn a written Korean word into its spoken form. Korean spelling shows the parts of a word, such as a noun and a particle, while speech blends those parts together. The rules describe exactly how, so that a learner can predict the sound of a word from its Hangul.

The eight rules are listed below with one example each. Brackets show the spoken form, and the Hangul spelling never changes.

All eight start from the same fact: Korean syllables are pronounced as a flow, not as separate blocks. The first practical question is where to start.

Where to Start with Korean Sound Change Rules

The best starting point depends on the problem you notice. The table sends each common situation to one lesson set.

If none of these fits, begin with the lessons on batchim pronunciation, because every rule here starts from a final consonant. The overview lessons come next.

How Do the Rules Fit Together?

The rules fit together in a fixed order, and three overview lessons show it. Each one answers a different question: how the rules combine, where to look up a word, and which rules share a pattern.

Korean Sound Changes Explained sets out the order in which the eight rules apply, with 독립, 꽃잎, 앉는 and 좋아요 as test words. It is the lesson to read when a word seems to need two rules at once.

Korean Sound Change Cheat Sheet is a one-page reference. It finds the rule and the spoken form for 합니다, 같이, 신라, 학교, 좋다 and 한여름.

Korean Consonant Assimilation groups nasalization, liquidization and palatalization as assimilation, which means one sound becomes more like its neighbor. It also teaches how to label an example as progressive or regressive.

The overview lessons are a map, but the first rules in the map are the ones that appear in the earliest Korean words.

Which Rule Matters Most for Beginners?

Liaison matters most for beginners, followed by nasalization. Liaison appears in nearly every sentence, because many nouns and verb stems end in a consonant and many of the particles and endings that follow them start with a vowel.

Liaison (Resyllabification) teaches how a final consonant moves to a following vowel. Its five lessons cover the basic rule, particles, tense and aspirated finals, double batchim and compound words.

Nasalization teaches why ㄱ, ㄷ and ㅂ become ㅇ, ㄴ and ㅁ before ㄴ or ㅁ. Its five lessons include the formal ending -ㅂ니다, which is the reason 합니다 is spoken [함니다].

These two subsections account for much of what beginners hear in polite speech. The rules that make consonants tense or breathy come next.

Rules for Tense and Aspirated Sounds

Two rules change the force of a consonant, and a third rule is a spelling issue that triggers one of them. Tense sounds are tight with no puff of air, and aspirated sounds have a strong puff.

Tensification teaches five triggers that make a plain consonant tense, from 학교 [학꾜] to 할 수 [할쑤]. Its lessons separate the predictable cases from the ones that depend on the word.

Aspiration teaches how ㅎ and a stop merge into ㅋ, ㅌ or ㅊ in both directions, as in 좋다 [조타] and 입학 [이팍].

Korean Sai Siot explains the extra ㅅ written in some compounds and teaches 냇가, 바닷가, 콧날 and 나뭇잎 with the right sound change.

With the common rules covered, the remaining four are narrower.

Less Common Rules

Four rules apply to fewer words, and they suit learners who have the first four rules in place.

Liquidization teaches how ㄴ becomes ㄹ next to ㄹ, as in 신라 [실라], and the short list of exceptions.

Palatalization teaches how ㄷ and ㅌ before 이 become ㅈ and ㅊ, as in 같이 [가치], and where the rule stops.

H-Weakening teaches the two situations where ㅎ is silent, and it trains 좋아요, 많이 and 은행 to sound natural.

N-Insertion teaches the added ㄴ in compounds such as 한여름 [한녀름], and the exceptions.

The rules so far work inside one word. The last question is what happens when two words meet.

What Changes across Word Spaces?

Sound changes often continue across the space between two words that are said together. The phrase 밥 먹어요 is spoken as one flow, and the final ㅂ of 밥 behaves as if the space were not there.

Korean Sound Changes Between Words teaches five phrases: 밥 먹어요, 한국 어때, 꽃 안에, 집 나왔어 and 못 해요. It shows which changes cross a space and which stop at a pause.

Comparing the Korean Pronunciation Rules Lessons

The table compares the eight subsections by what each fixes, the level it suits and the number of lessons.

Levels follow the CEFR scale (A1 is the beginner level and B1 is intermediate), as assigned by this site. The next section turns the table into a practice routine.

How Do You Practise Korean Pronunciation Rules?

Practise by listening first, saying the spoken form second, and checking the spelling last. The routine takes about 10 minutes per rule.

1. Listen to the audio for one word. Play the clip twice before you read the bracket.
2. Say the spoken form aloud. Cover the Hangul and say the word from the bracket.
3. Predict, then check. Pick a new word, name the rule, say it, and check against the lesson.
4. Write a short dictation. Write what you hear in Hangul and restore the spelling.

For listening practice on easily confused sounds, use the page on Korean minimal pairs. To see how romanization handles these changes, read about Korean romanization, and for the terms, use the pronunciation glossary. Beginning with a fixed order keeps the study load small.

Study Order at a Glance

This section orders the rules by roughly how often each one changes common words, not by linguistic category.

1. Liaison (책이, 먹어요)
2. Nasalization (합니다, 먹는)
3. Tensification (학교, 할 수)
4. Aspiration (좋다, 많다)
5. H-weakening (좋아요, 많이)
6. Palatalization (같이, 굳이)
7. Liquidization (신라, 설날)
8. N-insertion (한여름, 꽃잎)

Rules 1 to 3 cover much of what changes in everyday polite speech, and rules 4 to 8 fill in the rest. The section does not require all eight before you move on, because a beginner can use liaison, nasalization and tensification and still learn the others later.

Scope, Audio and Review Status

This section covers the sound-change rules of Standard Korean as set out in the 표준 발음법. It does not cover intonation, rhythm or regional dialects. Some rules are obligatory, such as liaison, and some vary between speakers, such as certain ㄴ insertion cases, and each lesson says which is which.

All Korean text, romanization and audio on these pages are generated drafts that still await review by a Korean specialist. The audio shows one standard Seoul pronunciation.

Frequently Asked Questions

Do I need to learn all the sound change rules? No. A beginner gets most of the benefit from liaison, nasalization and tensification, which together cover many common words and the polite ending -ㅂ니다. The other rules matter for natural speech and for understanding fast listening. Learn them in the section order and add each one when you meet its words.

In what order should I learn them? Start with liaison, then nasalization, tensification and aspiration, then ㅎ weakening, palatalization, liquidization and ㄴ insertion. The order roughly follows how often each rule changes everyday words. The overview lesson on how the rules fit together explains what to do when a word needs two rules at once.

Why is 합니다 pronounced 함니다? The final ㅂ of 합 sits before the ㄴ of 니. Under the nasalization rule, a final ㅂ before ㄴ or ㅁ is spoken as ㅁ, so the word becomes [함니다]. Revised Romanization writes hamnida. The spelling stays 합니다, because the change happens only in speech.

Are the rules the same for all speakers? The rules describe Standard Korean, which is based on educated Seoul speech. Most speakers across Korea follow the main rules such as liaison and nasalization. Regional dialects, including those of Busan, differ in intonation and some sounds, and a few rules, such as certain ㄴ insertion cases, vary between speakers.