🇰🇷 Lesson 2: Hangul Vowels & Syllable Blocks

In Lesson 1 you met the consonants and borrowed one vowel, ㅏ. Now you get the rest: all 21 vowels, and the one idea that makes Korean writing click — letters are stacked into syllable blocks, one block per syllable. By the end of this lesson you will be able to sound out almost any Korean word, even ones you don't know yet.

📖 How Vowels Work in Hangul

Korean vowels are built from three elements that King Sejong based on Neo-Confucian philosophy:

• ㆍ (dot) — represents the sky/heaven (양, yang)
• ㅡ (horizontal line) — represents the earth (음, yin)
• ㅣ (vertical line) — represents a person standing

All vowels are combinations of these elements. Vowels are either vertical (written to the right of a consonant) or horizontal (written below a consonant).

The symbolism is not the whole story. The Hunminjeongeum Haerye also describes each base vowel by what the tongue does: for ㆍ the tongue is drawn back and the sound is deep; for ㅡ it is drawn back a little; for ㅣ it is not drawn back and the sound is shallow. So, like the consonants, the vowels combine philosophy with real phonetic observation. In modern print the dot has become a short stroke: ㅏ is ㅣ with the "heaven" stroke on the outside.

🔤 The 10 Basic Vowels

🔤 The 11 Compound Vowels

Compound vowels are made by combining two basic vowels. Most are intuitive once you know the basic vowels: say the two parts quickly and they merge into one glide.

🧱 Building Syllable Blocks

Korean is written in syllable blocks. Each block is one syllable, combining a consonant + vowel (and optionally a final consonant). Every block must start with a consonant — if a syllable starts with a vowel sound, use ㅇ as a silent placeholder. Think of each block as a tiny box: the vowel's shape decides where everything goes.

Block Patterns

🧪 Try It: Build a Syllable

Hangul syllables aren't looked up in a table — they're computed. Unicode lays out all 11,172 possible blocks in one contiguous run, so any block's code point is arithmetic on its three parts. Pick an initial, a medial, and an optional final, and watch the block assemble.

The formula is 0xAC00 + (initial × 21 + medial) × 28 + final — 19 initials, 21 medials, 28 finals (index 0 meaning "no 받침").

📖 Reading Practice

Try reading these common words. Sound out each syllable block, then press 🔊 to check yourself:

Bonus: words you already know

Korean has borrowed many English words. Because Korean syllables can't end in most consonant clusters, extra ㅡ vowels get added — that's why "ice cream" grows to five syllables.

Did some of those take you a while? Good — that slow, effortful decoding is exactly how reading fluency is built. Every word you sound out makes the next one a little faster.

💬 Dialogue: Reading Together

A student is practising reading with a teacher. The phrases are fixed expressions for now — you'll learn how they're built from Lesson 5 onward.

🇰🇷 Cultural Note — the lost vowel: The "heaven" dot ㆍ (called 아래아, "lower a") was once a vowel in its own right. Its sound merged into others centuries ago, and the 1933 spelling standard dropped it from ordinary writing. It lives on in the vowel strokes you just learned, in some shop signs and brand logos that use it for an old-fashioned look, and in the Jeju language, where older speakers still preserve a distinct vowel for it.

✏️ Exercises

🧠 Check Your Understanding

❓ Common Questions

🔮 Looking Ahead

You can now read Korean letter by letter. But written Korean and spoken Korean are not always identical — 한국어 is said "han-gu-geo", and 감사합니다 has an "m" sound you can't see in the spelling. In Lesson 3: Pronunciation Rules, you'll learn the handful of predictable sound changes (linking, nasalization, aspiration, tensification) that turn careful letter-by-letter reading into natural Korean.