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세종 대왕sejong daewang
King Sejong the Great: the king who gave Korea its alphabet
Sejong (1397–1450), the fourth king of the Joseon dynasty, is one of the most admired rulers in Korean history. He is remembered above all for Hangul, the alphabet he created so that ordinary people could read and write. Here is his life in ten moments.
1397
A prince who loved books
Sejong was born Yi Do in Hanyang (today's Seoul) in 1397, the third son of the man who would become King Taejong, the third king of the Joseon dynasty. As a prince he was titled Prince Chungnyeong (Grand Prince from 1413), and he was known for his love of study.
- 충녕 대군chungnyeong daegun· Grand Prince Chungnyeong
1418
The third son becomes king
In 1418 Taejong removed his eldest son, Crown Prince Yangnyeong, as heir and chose Chungnyeong for his learning and good judgment. Two months later Taejong gave up the throne, and the 21-year-old became the fourth king of Joseon. Taejong kept command of the army until his death in 1422. "Sejong" is the name he was given after his death; Koreans call him Sejong the Great.
- 세종 대왕sejong daewang· Sejong the Great
1420
The Hall of Worthies
Sejong expanded the Jiphyeonjeon, the Hall of Worthies: a royal research institute, often compared to a think tank, where talented young scholars studied history, law, science and language and advised the king. Many of his projects, including the new alphabet's explanatory book, came out of this circle.
- 집현전jipyeonjeon· Hall of Worthies
1429–1442
Farming, science and timekeeping
His court published Nongsa jikseol (1429), a farming guide based on the experience of Korean farmers rather than Chinese books. With the inventor Jang Yeong-sil and other scholars, the court built a self-striking water clock and a bowl-shaped sundial (both 1434), and in 1441 a standard rain gauge, which from 1442 was used across the country to record rainfall.
- 농사직설nongsajikseol· Straight Talk on Farming
- 자격루jagyeongnu· self-striking water clock
- 앙부일구angbuilgu· hemispherical sundial
- 측우기cheugugi· rain gauge
1430s–1440s
Music and the northern frontier
With the musician Pak Yeon, Sejong reformed court music, and his court created jeongganbo, a notation that records both pitch and length. In the north, his generals Choe Yun-deok and Kim Jong-seo set up the Four Commanderies and Six Garrisons, moving the border to the Amnok (Yalu) and Duman (Tumen) rivers, close to where it is today.
- 정간보jeongganbo· music notation
- 사군 육진sagun yukjin· Four Commanderies and Six Garrisons
1443
Why he created Hangul
Writing meant Hanja, Chinese characters, which took years to learn and did not fit the Korean language well, so most ordinary people could not read or write. At the end of 1443 Sejong revealed 28 new letters of his own design and named them Hunminjeongeum, "the proper sounds for teaching the people."
"The sounds of our language differ from those of China and do not fit Chinese characters. So many common people have something to say but cannot put it in writing. I feel sorry for them, so I have made 28 new letters that everyone can learn easily and use every day."
- 훈민정음hunminjeongeum· the proper sounds for teaching the people
1444
Opposition at court
Not everyone welcomed the letters. In early 1444 Choe Malli, a senior scholar of the Hall of Worthies, led a written protest to the king, arguing that a script of their own would pull Korea away from Chinese learning and culture. Sejong answered that the letters were made for the good of the people, briefly detained the protesters for a day, and carried on.
- 언문eonmun· vernacular script, an old name for Hangul
1446
Published, with the design explained
In the ninth lunar month of 1446 the letters were made public in the book Hunminjeongeum. Its long explanation, the Haerye, written by Hall of Worthies scholars led by Jeong In-ji, shows exactly how each letter was designed: consonants copy the shape of the speech organs, and vowels are built from symbols for heaven, earth and person. Of the original 28 letters, today's Hangul uses 24.
Consonants: the speech organs
- ㄱBack of the tongue blocking the throatadds strokes to make ㅋ
- ㄴTongue touching the ridge behind the upper teethadds strokes to make ㄷ ㅌ
- ㅁThe mouthadds strokes to make ㅂ ㅍ
- ㅅA toothadds strokes to make ㅈ ㅊ
- ㅇThe throatadds strokes to make ㅎ
A stroke is added for a stronger sound: ㄱ → ㅋ, ㄴ → ㄷ → ㅌ.
Vowels: heaven · earth · person
- ㆍ하늘haneulheaven
- ㅡ땅ttangearth
- ㅣ사람saramperson
ㆍ is a round dot, ㅡ is a flat line, ㅣ is a standing line. Joining them makes the other vowels: ㆍ above ㅡ gives ㅗ, ㆍ to the right of ㅣ gives ㅏ. The dot is no longer a letter of its own today, but it lives on as the short stroke in ㅏ, ㅓ, ㅗ and ㅜ.
- 해례본haeryebon· the Haerye edition (with explanations)
1450
His final years
In poor health for years, Sejong had his son, the future King Munjong, handle daily government from 1445. He died in 1450 at the age of 52 and was buried with Queen Soheon at Yeongneung in Yeoju.
- 영릉yeongneung· his royal tomb
Today
His legacy
Hanja remained the main script for official writing for centuries; Hangul became the script of government documents only in 1894. Today Sejong is everywhere in Korea:
- Hangul Day, October 9A national holiday. The date comes from the 1446 publication of Hunminjeongeum.
- The 10,000-won noteHis portrait has been on Korea's 10,000-won banknote since 1973.
- Gwanghwamun SquareA large bronze statue of the seated king, unveiled in 2009, stands in the square in central Seoul.
- UNESCO Memory of the WorldThe Hunminjeongeum Haerye edition was inscribed on the register in 1997.
- 한글날hangeullal· Hangul Day
- 광화문gwanghwamun· Gwanghwamun
What Sejong means to Koreans
Koreans call him Sejong Daewang, Sejong the Great. In Korea, the title Daewang, "the Great", is given to only two rulers: Sejong and King Gwanggaeto of Goguryeo (Gwanggaeto Daewang). Sejong is widely regarded as one of the most respected figures in Korean history. Much of that affection comes from the reason behind his greatest work: in his own preface he wrote that he felt sorry for ordinary people who could not put their thoughts into writing.
For many Koreans, Hangul is a deep source of pride and identity, and every name, letter and text message written in it is a small reminder of his gift. His name is all around them: Sejong-daero, the great boulevard through central Seoul; the Sejong Center for the Performing Arts; King Sejong Station in Antarctica; the King Sejong Institutes that teach Korean around the world; and Sejong City, where many government ministries are now based. And every October 9, Hangul Day, is a public holiday to celebrate the letters he gave his people.
28 letters, made to be easy
Jeong In-ji wrote in the Haerye that a wise person could learn the letters in a single morning, and even a slow learner within ten days.
Now learn the letters he made →한글hangeul
Hangul basics: the Korean alphabet
Hangul has 14 basic consonants and 10 basic vowels, plus double consonants and compound vowels built from them. Each letter below shows its sound in English letters (Revised Romanization). Then see how letters stack into syllable blocks, and explore every syllable in the chart.
Consonants
Each card shows the letter, its Korean name, and how it sounds. Some consonants sound softer at the start of a word and change at the end of a syllable. Play a card to hear the letter's name.
14 basic consonants
ㄱ
기역 [giyeok]
g / k
g at the start, k at the end
ㄴ
니은 [nieun]
n
ㄷ
디귿 [digeut]
d / t
d at the start, t at the end
ㄹ
리을 [rieul]
r / l
r at the start, l at the end
ㅁ
미음 [mieum]
m
ㅂ
비읍 [bieup]
b / p
b at the start, p at the end
ㅅ
시옷 [siot]
s
t at the end
ㅇ
이응 [ieung]
silent / ng
silent at the start, ng at the end
ㅈ
지읒 [jieut]
j
t at the end
ㅊ
치읓 [chieut]
ch
t at the end
ㅋ
키읔 [kieuk]
k
strong puff of air
ㅌ
티읕 [tieut]
t
strong puff of air
ㅍ
피읖 [pieup]
p
strong puff of air
ㅎ
히읗 [hieut]
h
5 double (tense) consonants
ㄲ
쌍기역 [ssanggiyeok]
kk
tense, no puff of air
ㄸ
쌍디귿 [ssangdigeut]
tt
tense, no puff of air
ㅃ
쌍비읍 [ssangbieup]
pp
tense, no puff of air
ㅆ
쌍시옷 [ssangsiot]
ss
tense s
ㅉ
쌍지읒 [ssangjieut]
jj
tense, no puff of air
Vowels
A vowel is never written alone: it is paired with the silent consonant ㅇ, so ㅏ is written and said as 아 [a]. Play a card to hear the vowel.
10 basic vowels
ㅏ
a
as in 아 [a]
ㅑ
ya
as in 야 [ya]
ㅓ
eo
as in 어 [eo]
ㅕ
yeo
as in 여 [yeo]
ㅗ
o
as in 오 [o]
ㅛ
yo
as in 요 [yo]
ㅜ
u
as in 우 [u]
ㅠ
yu
as in 유 [yu]
ㅡ
eu
as in 으 [eu]
ㅣ
i
as in 이 [i]
11 compound vowels
ㅐ
ae
as in 애 [ae]
ㅒ
yae
as in 얘 [yae]
ㅔ
e
as in 에 [e]
ㅖ
ye
as in 예 [ye]
ㅘ
wa
as in 와 [wa]
ㅙ
wae
as in 왜 [wae]
ㅚ
oe
as in 외 [oe]
ㅝ
wo
as in 워 [wo]
ㅞ
we
as in 웨 [we]
ㅟ
wi
as in 위 [wi]
ㅢ
ui
as in 의 [ui]
In everyday Seoul speech ㅐ [ae] and ㅔ [e] sound almost the same, and so do ㅙ [wae], ㅚ [oe] and ㅞ [we]. More about vowels
How syllables are built
Korean letters are grouped into square blocks, and each block is one syllable. A block always starts with a consonant, then a vowel, and sometimes ends with a final consonant (batchim).
Consonant + vertical vowel
ㄱ + ㅏ =
가
[ga]Tall vowels (ㅏ ㅑ ㅓ ㅕ ㅣ …) sit to the right of the consonant.
Consonant + horizontal vowel
ㄱ + ㅗ =
고
[go]Flat vowels (ㅗ ㅛ ㅜ ㅠ ㅡ) sit under the consonant.
Add a final consonant (batchim)
ㄱ + ㅏ + ㄱ =
각
[gak]A consonant at the bottom closes the syllable. Here ㄱ at the end sounds like a short k.
Final ㅇ sounds like ng
ㄱ + ㅏ + ㅇ =
강
[gang]At the bottom, ㅇ is no longer silent: it sounds like the ng in "sing".
ㅇ as a silent placeholder
ㅇ + ㅏ =
아
[a]Every block starts with a consonant. When a syllable starts with a vowel sound, silent ㅇ fills the first spot.
Only seven sounds can end a syllable, so many different final letters share one sound. More about batchim
Syllable chart
Pick a consonant to see it with every vowel. Tap any syllable to hear it.
Every syllable has audio. Syllables Koreans use today come first, most common first; rare ones that almost never appear in modern Korean are shown in a lighter style below them.
ㄱ + vowels used today (20, most common first)
Rare in modern Korean (1)
Romanization follows the official Revised Romanization letter by letter. In real words sounds can change (for example ㅢ after a consonant is usually said like ㅣ), which the Korean Guides explain. “Used today” means the syllable is one of the 2,350 common KS X 1001 syllables and appears in everyday Korean text (news and web corpora).
한글 안내hangeul annae
Korean guides for curious learners
Clear, free explanations of the points that trip up almost every Korean learner, from 은/는 vs 이/가 to batchim and honorifics. Every example shows Hangul, a romanization, and an English meaning.
Hangul & Pronunciation
Read the alphabet and say words the way Koreans actually do.
- How Hangul Works: Read the Korean Alphabet in One SittingA friendly introduction to Hangul: its 24 basic letters, how they stack into syllable blocks, and a simple routine to start reading Korean today.Read article →
- Korean Vowels Made Simple: From ㅏ to ㅢLearn the 10 basic and 11 combined Korean vowels, how their shapes predict their sounds, and which pairs sound almost the same in modern speech.Read article →
- Batchim Explained: How Korean Final Consonants Really SoundWhy many different final consonants collapse into just seven sounds, how double batchim works, and practical examples for reading Korean words correctly.Read article →
- Liaison in Korean: Why Words Flow Together When You SpeakUnderstand 연음 (liaison), the rule that links a final consonant to the next vowel, with clear examples, exceptions, and listening tips.Read article →
- Plain, Tense, and Aspirated Consonants: Hearing ㄱ, ㄲ, and ㅋKorean has three versions of several consonants. Learn how plain, tense, and aspirated sounds differ, with minimal pairs and practice tricks.Read article →
- Korean Sound Changes: Nasalization, Tensing, and Other ShortcutsWhy 감사합니다 sounds like gamsahamnida: a practical guide to nasalization, ㄹ changes, tensing, and palatalization in everyday Korean.Read article →
Grammar Essentials
The patterns that make Korean sentences click.
- 은/는 vs 이/가: The Korean Topic and Subject Markers ExplainedThe clearest way to understand when to use 은/는 (topic) and 이/가 (subject) in Korean, with contrast, new information, and question patterns.Read article →
- The Object Particle 을/를: What It Does and When Koreans Skip ItLearn how 을/를 marks the object in Korean, which verbs take it, how it creates emphasis, and why it disappears in casual speech.Read article →
- Korean Word Order: Why the Verb Always Comes LastAn easy guide to subject-object-verb (SOV) order in Korean, how particles give flexibility, and how to build longer sentences step by step.Read article →
- Why Koreans Leave Out 'I' and 'You': Subject and Object OmissionKorean often drops subjects, objects, and pronouns when context is clear. Learn how to understand and use omission naturally.Read article →
- Korean Irregular Verbs: ㅂ, ㄷ, 르, ㅅ, and ㅎ Made EasyA practical guide to the most common Korean irregular verbs, why their stems change, and simple ways to remember each pattern.Read article →
- Korean Tenses Made Simple: Past, Present, and Future in 해요체Learn how to form present, past, and future tense in polite Korean, including the -았/었어요 and -(으)ㄹ 거예요 patterns and when to use them.Read article →
- Saying No in Korean: 안, -지 않아요, 못, and 아니에요Learn the main ways to make Korean sentences negative, the difference between 안 and 못, and how to say 'it's not' with 아니에요.Read article →
- Connecting Sentences in Korean: -고, -아서/어서, and -지만Link ideas smoothly in Korean with -고 (and), -아서/어서 (so, and then), and -지만 (but), with clear examples and common mistakes.Read article →
- Saying What You Want in Korean: -고 싶어요, -(으)ㄹ래요, and MoreLearn how to express wants, wishes, and preferences in Korean with -고 싶어요, -(으)ㄹ래요, and 주세요, plus polite ways to ask others.Read article →
Speaking Naturally
Politeness levels, sentence endings, and everyday expressions.
- 해요체 vs 반말: Choosing the Right Politeness Level in KoreanWhen to use polite 해요체, casual 반말, and formal 합니다체 in Korean, with examples and tips for switching speech styles safely.Read article →
- Korean Honorifics: The -시- Marker and Special Respect WordsHow Korean shows respect with the honorific -시-, special verbs like 드시다 and 주무시다, humble words, and honorific particles.Read article →
- Korean Sentence Endings: The Nuance of -네요, -군요, -잖아요, and -거든요Small sentence endings carry big feelings in Korean. Learn what -네요, -군요, -지요, -잖아요, and -거든요 add to what you say.Read article →
- 25 Everyday Korean Phrases You'll Use Every Single DayEssential polite Korean phrases for greetings, thanks, apologies, and small talk, with Hangul, romanization, and when to use each one.Read article →
- Drama-Style Korean: Emotional Expressions You Hear All the TimeLearn the everyday emotional Korean expressions that fill dramas and real life, from surprise and worry to comfort, with original examples.Read article →
- Oppa, Unnie, Seonbae: How to Address People in KoreanA guide to Korean terms of address: 씨, 님, family-style titles like 오빠 and 언니, job titles, and why Koreans avoid saying 'you.'Read article →
- How to Ask Questions in Korean: Question Words and Natural PatternsLearn Korean question words (누구, 뭐, 어디, 언제, 왜, 어떻게), how intonation turns statements into questions, and polite question patterns.Read article →
- Noona Meaning: Who Says 누나 and WhenNoona (누나) means "older sister," but only when a guy says it. Learn who uses it, how fans use it, and when it sounds natural or odd.Read article →
Vocabulary & Numbers
Two number systems, counters, and where Korean words come from.
- Korean's Two Number Systems: When to Use 하나, 둘 vs 일, 이Korean uses native numbers (하나, 둘, 셋) and Sino-Korean numbers (일, 이, 삼). Learn both systems and exactly when each one is used.Read article →
- Korean Counters: 개, 명, 잔, 마리, and Other Essential UnitsLearn how Korean counting words work, which counters go with which numbers, and the most useful counters for shopping, cafés, and daily life.Read article →
- Telling Time and Dates in Korean Without Getting ConfusedHow to say the time, days of the week, months, and dates in Korean, including when to use native versus Sino-Korean numbers.Read article →
- Native Korean vs Sino-Korean Words: Two Layers of Korean VocabularyWhy Korean often has two words for one idea, how Sino-Korean roots help you guess meanings, and when each type of word sounds natural.Read article →
Food, Travel & Texting
Korean you can use at the table, on the subway, and in your chats.
- Ordering Food in Korean: Restaurant Phrases and EtiquetteEverything you need to order food in Korea: calling the server, ordering, asking about spice, requesting refills, and paying, with polite phrases.Read article →
- Korean Food Vocabulary: Dishes, Tastes, and Words Every Food Lover NeedsLearn essential Korean food words: popular dishes, cooking styles, flavors, and how to describe what you eat, all with Hangul and romanization.Read article →
- Essential Korean Travel Phrases: Subway, Taxi, Shopping, and HotelsPractical polite Korean for travelers: asking directions, riding the subway and taxis, shopping, checking in, and handling emergencies.Read article →
- Korean Texting Slang: ㅋㅋ, ㅎㅎ, ㅠㅠ, and Chat Abbreviations ExplainedDecode Korean texting: laughing with ㅋㅋ and ㅎㅎ, crying with ㅠㅠ, consonant abbreviations, shortened words, and when slang is appropriate.Read article →
- Maknae Meaning: The Youngest Member, ExplainedMaknae (막내) means the youngest in a family or group. Learn how it's used in K-pop, at home and at work, plus why Koreans say it "mangnae."Read article →