The Korean Vowel ㅝ (wo): Sound, Writing and Example Words

What you will learn in about 15 minutes

• Say ㅝ as [wʌ] and avoid the English “woe” sound.
• Write ㅝ from its two parts, ㅜ and ㅓ, inside a block.
• Recognise ㅝ in the polite forms 더워요, 추워요 and 고마워요.
• Read 뭐, 원, 권, 샤워 and 어려워요 aloud.

Before you start: learn the vowels ㅜ and ㅓ, because ㅝ is made from both.

What Sound Does ㅝ Make?

ㅝ makes the sound [wʌ]: a quick “w” followed by the open, unrounded vowel ㅓ. A reliable English anchor is the word “won”, the past tense of “win”, which sounds almost exactly like the Korean word 원. The sound is “wuh”, not “woe”.

Listen to the letter and two words that contain it, and repeat them.

Revised Romanization, the government system for writing Korean in Latin letters, spells ㅝ as “wo”. For this letter that spelling is a trap: English readers see “wo” and say “woe”. The Hangul orthography rules (한글 맞춤법) list ㅝ among the eleven compound vowel letters, which are made from the ten basic vowels.

How Is ㅝ Built from Simpler Vowels?

ㅝ is ㅜ plus ㅓ. The rounded ㅜ turns into a short “w” glide, and the unrounded ㅓ carries the vowel sound. In the written block, ㅜ lies under the consonant and ㅓ stands to its right, so ㅝ is a mixed vowel.

ㅝ is also the dark partner of ㅘ. Korean vowels fall into bright (ㅏ, ㅗ) and dark (ㅓ, ㅜ) groups, a pattern called vowel harmony. ㅘ combines the bright pair ㅗ and ㅏ, and ㅝ combines the dark pair ㅜ and ㅓ. The vowel ㅘ lesson compares them directly.

With the sound and the design clear, the next step is to put the letter on paper.

Writing ㅝ: Stroke Order and Typing

Write ㅝ in four strokes: first ㅜ (a horizontal line, then a short stroke hanging down), then ㅓ (a short stroke, then the long vertical line). The rule is top before bottom and left before right, so the ㅜ comes first and the tall ㅓ line closes the shape on the right.

1. Draw the horizontal line of ㅜ under the consonant, left to right.
2. Draw the short stroke of ㅜ, hanging downward from the middle of that line.
3. Draw the short stroke of ㅓ to the right of the ㅜ, left to right.
4. Draw the long vertical line of ㅓ from top to bottom, along the right edge of the block.

You will know it worked when the long vertical line runs the full height of the block and the ㅜ part sits low and wide on the left. A common mistake is a short vertical line, which makes the block look squashed. Another is placing ㅜ too far right, so it crowds the ㅓ.

Guides differ slightly on stroke order for some letters. The Hangul stroke order lesson explains the convention used on this site.

To type 워 on a computer with the standard Korean keyboard, press D for the silent ㅇ, then N for ㅜ, then J for ㅓ. The how to type in Korean guide shows the whole layout.

Knowing the shape, the next question is how to produce the sound.

How to Pronounce the Korean Vowel ㅝ Step by Step

To pronounce the Korean vowel ㅝ, round your lips briefly for a short “w”, then relax them completely into an open, unrounded “uh”. The lips move from round to flat, which is the opposite of the English “woe”. Follow these steps with a mirror.

1. Round your lips as if saying “oo” for a split second.
2. Start voicing a very short “w” with the tongue pulled back.
3. Open your jaw about halfway and let the lips relax, unrounded.
4. Finish on a relaxed “uh”, like the vowel in “cup”.
5. Stop without adding another sound.

You will know it worked when your lips are flat at the end of the sound. In a mirror, the circle opens up as you finish. The first part is a glide, a very short vowel-like sound that leads into the main vowel.

Is ㅝ a Vowel or a Diphthong?

ㅝ is classified as a diphthong in the Standard Pronunciation rules (표준 발음법, Article 5), because it joins a glide to a vowel. A diphthong is a vowel sound that moves from one position to another within one syllable, and a monophthong keeps one steady position. In ㅝ the movement is from a rounded “w” to an unrounded “uh”. In practice you can treat ㅝ as one letter with one fast sound. Korean readers see the single letter, not two parts, and you should too.

Why Is ㅝ Romanized “Wo” When It Sounds Like “Wuh”?

Revised Romanization writes ㅓ as “eo” and ㅜ as “u”, but for the combined ㅝ it uses “wo”. The system avoids special marks, so it reuses letters that English readers already know, and the result is a spelling that suggests the wrong vowel. The Korean vowel after the glide is ㅓ, not ㅗ. If you ever see “wo” in a romanized Korean name or sign, read it as [wʌ]. A well-known example is the name of the currency itself, spelled “won”.

The guide to why Korean romanization looks wrong lists other traps of this kind. The next question is where this letter appears in grammar.

Why Does 고맙다 Become 고마워요?

ㅝ appears in the polite forms of most ㅂ-irregular verbs, which follow one pattern: the final ㅂ of the stem turns into 우, and 우 plus the ending 어 combines into 워. This is why 고맙다 (to be thankful) becomes 고마워요, and why the sound ㅝ shows up in so many high-frequency phrases.

There are a few exceptions. 돕다 (to help) and 곱다 (to be pretty) use 와 instead, giving 도와요 and 고와요. You do not need to memorise the pattern now. The point is that your ear and eye will recognise ㅝ at the end of many common words. The full pattern is explained in ㅂ irregular verbs.

Where Else Does ㅝ Come From?

ㅝ also appears when a verb stem ending in ㅜ meets the ending 어. The ㅜ and the 어 melt together into one block with ㅝ. This is called contraction, and it is a second route to the same letter, besides the ㅂ-irregular pattern.

The spelling logic is the same each time: ㅜ plus ㅓ writes ㅝ. In fast speech, learners sometimes hear 줘 as a single sound, and that is correct. It is one block with one vowel.

Honest limit: the ㅓ half of ㅝ is the hardest part for English speakers, because English has no exact match. If your ㅝ still sounds odd, go back to the vowel ㅓ lesson and perfect the plain vowel first. Once ㅓ is stable, the w-glide in front is easy.

Worked Example: Reading Words with ㅝ

Reading a block means asking three questions: what is the first consonant, which vowel is it, and is there a final consonant. Here is 뭐 (what), decoded step by step.

1. The block has ㅁ at the top-left, ㅜ under it, and ㅓ to the right.
2. ㅁ gives you [m], ㅝ gives you [wʌ].
3. Together: [mwʌ]. The word means “what”.

Next, 원 (won). The block 원 has silent ㅇ on top, ㅝ around it, and a final ㄴ at the bottom. The final ㄴ closes the sound with the tongue tip on the ridge behind the upper teeth, as in “sun”. So 원 is [wʌn]. It means the currency “won” and also “circle”.

Here are more words to read aloud.

Because ㅝ is a mixed vowel, it occupies both the space below the consonant and the space to its right. The page on how syllable blocks are shaped shows all six layouts.

ㅝ vs ㅘ vs ㅗ

ㅝ is [wʌ], ㅘ is [wa], and ㅗ is [o]. The first two are a bright and dark pair. The table pairs each lookalike with a real word, so you can train your ear.

The visual cue is the small stroke of ㅓ on the left of its vertical line. The vowel ㅘ lesson shows the bright partner with the same layout.

How Can You Remember ㅝ?

The easiest way to remember ㅝ is to read it as two letters stuck together: first ㅜ, then ㅓ. Three cues work for most learners.

• Build it: ㅜ + ㅓ = ㅝ. “Oo” then “uh” becomes “wuh”.
• Anchor a word: 원 for money and 뭐 for “what”. Both are everywhere.
• Think “dark”: ㅝ pairs with ㅘ the way ㅓ pairs with ㅏ.

Example Sentences with ㅝ

Short sentences help the vowel stick, because you hear it in a natural rhythm. Each line uses a word from this lesson.

• 뭐 해요? (Mwo haeyo?) What are you doing? Play
• 추워요. (Chuwoyo.) It is cold. Play
• 고마워요. (Gomawoyo.) Thank you. Play
• 천 원이에요. (Cheon wonieyo.) It is 1,000 won. Play

The romanization in brackets is only a guide. Notice how the spelling “wo” hides the real vowel, which is [ʌ]. 뭐, 추워요 and 원 are among the first ㅝ words most learners meet, in daily chat and on price tags.

Common Mistakes Learners Make with ㅝ

Learners often assume ㅝ is pronounced like the English “woe”, but the ending vowel is the open, unrounded ㅓ. Practising it from the romanization teaches the wrong sound, so rely on the Hangul and the audio.

• Mistake: ending on a round “oh”. Saying “woh” turns ㅝ into ㅘ-like or ㅗ-like sounds. Fix: let the lips spread flat at the end.
• Mistake: ending on a tight “oo”. That makes ㅜ. Fix: open the jaw halfway.
• Mistake: spelling conjugations with 와. 고마워요 is correct, 고마와요 is wrong. Fix: remember that 돕다 and 곱다 are rare exceptions.
• Mistake: hearing two syllables. “Wo” is not “oo-uh” with a pause between the parts. Fix: say it as one quick glide, like a short “wuh” in “won”, and record yourself to check the rhythm.
• Mistake: squashing the block. The tall ㅓ line must run the full height. Fix: write on a square grid.
• Mistake: treating 원 as “one”. The sound is similar, but the meaning is currency or circle. Fix: learn 일 and 하나 for numbers.

Practice: Read, Hear and Write

Try all three exercises, then check the answers at the end.

Exercise 1: pick by sound. Does each clip contain ㅓ or ㅝ?

Exercise 2: read aloud. 뭐, 원, 권, 샤워, 더워요, 추워요, 고마워요.

Exercise 3: write from dictation. Listen and write each syllable or word.

Exercise 4: round to flat. Say 원 ten times in front of a mirror. Your lips should start round and finish flat. Record and compare with the clip.

Answers. Exercise 1: Clips B and D contain ㅝ (워, 원). Clips A and C contain ㅓ (어, 언). Exercise 2: what, won, counter for books, shower, it is hot, it is cold, thank you. Exercise 3: check that the long vertical line of ㅓ runs the full block height and ㅜ sits low on the left.

What to Learn Next

You can now say and write the Korean vowel ㅝ, and you will recognise it in the common ㅂ-irregular phrases. The next lesson is ㅟ (wi), the w-vowel that ends in ㅣ. You can also return to the Korean w-vowels overview.

Review ㅝ with the Hangul flashcard decks, test your ear in the Hangul quizzes, and build blocks in the Hangul Syllable Builder. The interactive Hangul alphabet plays every letter. For mouth positions across all vowels, read the Korean vowel pronunciation guide.

This lesson does not cover the full ㅂ-irregular pattern, the counting system for books, or the history of the currency. Those topics have their own sections.

Frequently Asked Questions