Pronunciation Rules

By the end of this lesson you can:

• Explain why written and spoken Korean sometimes differ (e.g. why 있어요 sounds like 이써요)
• Apply the three pronunciation rules (Linking 연음, Nasalisation 비음화, and Tensing 경음화) to read 12 real words the way Koreans actually say them
• Recognise the five tense consonants ㄲ ㄸ ㅃ ㅆ ㅉ and the 받침 contexts that trigger tensing

TOPIK 1 skills: Pronunciation & listening

Linking Sounds & Tensing. Written Korean and spoken Korean are not always the same. These rules explain the gap. Once you know them, everything clicks.

RECALL: From Lesson 8: all 받침 reduce to 7 sounds (-k, -n, -t, -l, -m, -p, -ng). Today those 받침 start moving. When a closed syllable is followed by a vowel-initial syllable, the 받침 doesn’t just sit there. It shifts. That’s Linking, and it’s Rule 1 of today’s lesson.

Part 1 · Why Written and Spoken Differ

Korean spells for meaning, speaks for flow. Korean spelling preserves the roots of words, so you can see what morphemes are present. But when you say words at natural speed, sounds blend, shift, and adjust to make pronunciation flow smoothly. These adjustments follow predictable, learnable rules: almost everything you’ll hear comes down to a handful of patterns to recognise rather than long lists to memorise.

Three rules in today’s lesson:

1. Linking (연음): a 받침 jumps forward when the next syllable starts with ㅇ (silent)
2. Nasalisation (비음화): stop 받침 become nasal sounds before ㄴ or ㅁ
3. Tensing (경음화): consonants harden after certain 받침

TIP: Don’t try to memorise. Try to hear. The goal of this lesson is not to memorise rule tables. It’s to understand why words sound different from how they’re written, so that when you encounter a new word, you can apply the logic rather than be confused. Exposure and listening will do the rest over time.

Part 2 · Rule 1: Linking 연음

The 받침 that moves. When a syllable ending in a 받침 is followed by a syllable that begins with ㅇ (which is silent in the initial position), the 받침 slides across and becomes the initial consonant of the next syllable. The spelling stays the same. Only the sound moves.

Rule 1: 받침 + ㅇ initial = 받침 moves forward

The ㄴ from 한 slides into the empty initial slot of 어, making it sound like 너. The word looks unchanged. The shift is purely in pronunciation.

More examples of Linking in action

TIP: This is why 있어요 sounds like 이써요. 있어요 is one of the most common Korean phrases (“there is” or “I have”). Written, it looks like three separate sounds: it-eo-yo. Spoken, it flows as i-sseo-yo. Now you know why. You’ll hear this hundreds of times in dramas and conversation, and now it makes perfect sense.

Part 3 · Rule 2: Nasalisation 비음화

Stop 받침 become nasal before ㄴ and ㅁ. When a syllable ends in a stop 받침 (-k, -t, or -p) and the next syllable begins with ㄴ or ㅁ, the stop can’t hold. It softens into the nasal sound made in the same mouth position.

Rule 2: Stop → Nasal before ㄴ or ㅁ

Part 4 · Rule 3: Tensing 경음화 & The Tense Consonants

The five tense consonants: ㄲ ㄸ ㅃ ㅆ ㅉ. Korean has a set of five tense consonants, written with a doubled character. They sound like their base counterparts but tighter, with no breath and a more forceful onset. They appear in two situations: as part of a word’s spelling, or triggered by a 받침 before them.

Rule 3: Stop 받침 + plain consonant = tense consonant. When a plain consonant (ㄱ ㄷ ㅂ ㅅ ㅈ) follows a -k, -t, or -p 받침, it tenses. The stop provides a build-up of pressure that releases as a tense sound.

TIP: 학교 and 식당: two words you’ll use every day. 학교 (school) and 식당 (restaurant) are two of the most frequent Korean nouns. Both involve tensing. Now that you know the rule, their pronunciation is logical, not arbitrary. When you hear a Korean person say 식당, the sharp “tt” in the middle is the tense consonant triggered by the ㄱ 받침 before it.

Part 5 · Putting It All Together

Read these words: apply the rules. Each word involves at least one of today’s three rules. Read the written form, decide which rule applies, and say the spoken form aloud, then check yourself against the Answer Key at the end of the lesson.

Part 6 · Quick Reference: The Three Rules

Your cheat sheet

CULTURE: Why Korean subtitles don’t match what you hear. If you’ve ever watched a Korean drama with Korean subtitles and tried to follow along, you may have noticed that the written text and the spoken audio don’t always match, even in the subtitles. That’s these rules in action. Korean subtitles display the standard written form of words (preserving morpheme boundaries), while the actors are naturally applying linking, nasalisation, and tensing as they speak. This is actually a useful learning tool. Watching Korean content with Korean subtitles (even before you can read fast) trains your brain to connect the written form to the spoken form. Many advanced learners credit Korean subtitle watching as one of the fastest ways to improve both reading speed and listening comprehension simultaneously. Something to look forward to.

Homework

1. Write the three rule names in Korean and English from memory: 연음 (linking), 비음화 (nasalisation), 경음화 (tensing), with one example word each.
2. Say these words aloud, applying the rules: 한국어, 있어요, 국물, 학교, 식당, 먹어요, 좋아요. Say the written form first, then the spoken form. Record yourself if you can. The difference should be audible.
3. Add the five tense consonants to your study notes (ㄲ ㄸ ㅃ ㅆ ㅉ) with their sounds. You’ve seen ㅆ already in 있어요. They’ll appear more frequently as vocabulary expands in Week 3.
4. Watch 5 minutes of any Korean content (drama, variety show, YouTube) and listen specifically for words where the spoken sound doesn’t match what you’d expect from the spelling. Try to identify at least one instance of linking and one of tensing.
5. Lesson 10 is the Week 2 Review. It will test all of Week 2’s content: the compound vowels (ㅐ ㅔ ㅒ ㅖ ㅚ ㅟ ㅢ ㅘ ㅝ ㅙ ㅞ), 받침 sounds, and these three pronunciation rules. Run through your full flashcard deck tonight.

Answer Key

Part 5 · Putting It All Together