King Sejong’s design team did something no other alphabet did: they drew the consonants as diagrams of your mouth. ㄴ is your tongue tip touching behind your teeth. ㅁ is your closed lips. Learn five base shapes and the rest of the 19 consonants are derived by adding strokes for extra airflow.
That’s the trick this guide is built on — plus the plain/tense/aspirated system that decides whether Koreans hear you say “moon” or “bull.”
The 5 Base Shapes (Your Mouth, Drawn)
| Shape | What it draws | Sound family |
|---|---|---|
| ㄱ | tongue root blocking the back of the mouth | g/k |
| ㄴ | tongue tip raised to the front ridge | n |
| ㅁ | closed lips | m |
| ㅅ | teeth | s |
| ㅇ | open throat | (silent) / ng |
Every other consonant is one of these five with strokes added — more strokes = stronger airflow. This isn’t a mnemonic invented later; it’s the documented design principle of Hangul.
All 14 Basic Consonants
| Hangul | Sound | Name | Derived from |
|---|---|---|---|
| ㄱ | g/k | 기역 (giyeok) | base |
| ㄴ | n | 니은 (nieun) | base |
| ㄷ | d/t | 디귿 (digeut) | ㄴ + stroke |
| ㄹ | r/l | 리을 (rieul) | ㄴ family |
| ㅁ | m | 미음 (mieum) | base |
| ㅂ | b/p | 비읍 (bieup) | ㅁ + strokes |
| ㅅ | s | 시옷 (siot) | base |
| ㅇ | –/ng | 이응 (ieung) | base |
| ㅈ | j | 지읒 (jieut) | ㅅ + stroke |
| ㅊ | ch | 치읓 (chieut) | ㅈ + stroke |
| ㅋ | k | 키읔 (kieuk) | ㄱ + stroke |
| ㅌ | t | 티읕 (tieut) | ㄷ + stroke |
| ㅍ | p | 피읖 (pieup) | ㅂ + strokes |
| ㅎ | h | 히읗 (hieut) | ㅇ + strokes |
See the pattern? ㄱ→ㅋ, ㄷ→ㅌ, ㅂ→ㅍ, ㅈ→ㅊ: each added stroke means “same mouth position, more air.” That’s aspiration, drawn directly into the letterforms.
The 5 Double (Tense) Consonants
Write a consonant twice and it becomes tense (된소리) — tight throat, zero puff of air, almost “squeezed”:
| Hangul | Sound | Example |
|---|---|---|
| ㄲ | kk | 까 (kka) |
| ㄸ | tt | 따 (tta) |
| ㅃ | pp | 빠 (ppa) |
| ㅆ | ss | 싸 (ssa) |
| ㅉ | jj | 짜 (jja) |
The Three-Way System (The Real Challenge)
Korean doesn’t split consonants by voicing (g vs k) like English. It splits them by airflow:
| Plain | Aspirated | Tense |
|---|---|---|
| ㄱ 가 | ㅋ 카 | ㄲ 까 |
| ㄷ 다 | ㅌ 타 | ㄸ 따 |
| ㅂ 바 | ㅍ 파 | ㅃ 빠 |
| ㅈ 자 | ㅊ 차 | ㅉ 짜 |
| ㅅ 사 | — | ㅆ 싸 |
The paper test: hold a sheet of paper in front of your mouth. 파 should blast it. 바 should barely move it. 빠 shouldn’t move it at all.
These distinctions change meanings entirely:
달 (moon) — 탈 (mask) — 딸 (daughter) 방 (room) — 팡 (pop!) — 빵 (bread)
Getting 딸/달 wrong is the Korean equivalent of ship/sheep — natives hear the difference instantly. Korean tongue twisters are the classic training tool for exactly this.
Consonants Change Sound at Syllable Boundaries
One more layer: a consonant’s sound depends on its position. ㄱ is [g] between vowels but [k] at the end; ㄹ flips between [r] and [l]. And as final consonants (batchim), consonants interact with the next syllable — 학교 becomes [학꾜], 입니다 becomes [임니다]. Those patterns are the six pronunciation rules, and they’re why consonant knowledge alone doesn’t equal reading fluency.
Learn Them in Context, Not in Isolation
Flashcarding 19 letters works, but consonants stick faster inside real syllables: 가 나 다 라 rows, then real words. Our recommended path:
- The 5 base shapes + derivation logic (this page)
- Korean vowels — the other half of every syllable
- How syllable blocks assemble
- Reading practice until recognition is automatic
Or compress steps 1–4 into 15 minutes a day: Batchim’s syllable sprints drill consonant recognition with adaptive speed pressure — the fastest route from “I know ㄱ” to “I read 한국어 at a glance.”