Korean Basic Vowels ㅗ ㅛ ㅜ ㅠ ㅡ ㅣ — Complete Pronunciation Guide

This complete guide to Korean Basic Vowels ㅗ ㅛ ㅜ ㅠ ㅡ ㅣ — Complete Pronunciation Guide is your perfect starting point — because before you can read a single Korean word, you need to master these six essential vowels. Don’t worry if you have never studied Korean a day in your life. These vowel sounds are more familiar to you than you think, and by the end of this lesson you will be able to pronounce every single one of them correctly and confidently.

Korean is written in an alphabet called 한글 (Hangeul) [HAN-geul] — “the Korean alphabet,” and it was scientifically designed in 1443 to be logical and learnable. Unlike Chinese or Japanese, Hangeul follows clear rules. Every vowel has a fixed, consistent sound — what you see is exactly what you say. That predictability is your greatest advantage as a beginner, and it makes learning Korean basic vowels one of the most satisfying early milestones in your Korean journey.

In Korean, vowels are never standalone letters written alone on a line. They always pair with a consonant to form a syllable block. For now, Koreans use the silent placeholder consonant ㅇ (ieung) [ee-UNG] — “silent consonant / ŋ at end” to hold the vowel in place. So ㅗ becomes 오 (o) [OH] — “the vowel O written as a syllable.” You will see this pattern throughout this pronunciation guide.

Meet the Six Vowels: What Do ㅗ ㅛ ㅜ ㅠ ㅡ ㅣ Actually Look Like?

Before we dive into pronunciation, let’s talk about the visual shape of each vowel — because in Hangeul, the shape gives you a clue about the sound. Vowels built on a horizontal line (ㅗ ㅛ ㅜ ㅠ ㅡ) use back-of-the-mouth, rounded or flat sounds. The vowel built on a vertical line (ㅣ) uses a bright, front-of-the-mouth sound. Think of it as a visual map of your mouth. Once you see this pattern, the six Korean basic vowels stop looking like random symbols and start making beautiful sense.

Vowel-by-Vowel Pronunciation Breakdown

ㅗ — The “Oh” Vowel

오 (o) [OH] — “the sound ‘oh’” is written with a horizontal base line and a short tick pointing upward. Your lips round and push forward — exactly like saying “oh!” when you are surprised. This sound appears in 오리 (ori) [OH-ree] — “duck” and 소 (so) [SOH] — “cow.” Keep your mouth rounded and held steady — do not let it glide like the English “o” in “go,” which shifts toward a “w” sound at the end.

ㅛ — The “Yo” Vowel

요 (yo) [YOH] — “the sound ‘yo’” is simply ㅗ with an extra tick, which adds a quick “y” sound at the front. Think of saying “yo!” to greet a friend, but keep that same rounded “oh” at the end. You use this vowel every single day as a beginner: 요리 (yori) [YOH-ree] — “cooking / cuisine” and 교실 (gyosil) [GYOH-sil] — “classroom.” The extra tick = extra “y” — that is the rule for this entire vowel family.

ㅜ — The “Oo” Vowel

우 (u) [OO] — “the sound ‘oo’” looks like ㅗ flipped upside down — the tick now points downward. Your lips stay rounded but pull inward, like saying “oo” in “moon” or “food.” This is one of the most common sounds in Korean. You will hear it in 우유 (uyu) [OO-yoo] — “milk” and 구두 (gudu) [GOO-doo] — “dress shoes.” The flipped shape is your memory cue: flipped position, slightly different mouth shape.

ㅠ — The “Yu” Vowel

유 (yu) [YOO] — “the sound ‘yoo’” follows the exact same rule as ㅛ: add a tick, add a “y.” So ㅜ becomes ㅠ, and “oo” becomes “yoo” — like saying “you” or “yule.” You will find this in everyday words like 유리 (yuri) [YOO-ree] — “glass / crystal” and 유럽 (yureop) [YOO-reop] — “Europe.” Same principle, same pattern — Korean is remarkably consistent.

ㅡ — The “Eu” Vowel (The Tricky One)

으 (eu) [EU] — “the neutral ‘uh’ sound” is the one vowel that has no close English equivalent — and that is okay. It is a flat, unrounded sound made at the back of your mouth with your lips spread sideways (like a slight, relaxed smile) and your jaw barely open. Imagine the grunt sound “ugh” without the “g.” Practice it in 으음 (eum) [EUM] — “hmm / sound of thinking” and 크다 (keuda) [KEU-da] — “to be big.” This is the vowel that separates beginners from intermediate learners — nail it early.

ㅣ — The “Ee” Vowel

이 (i) [EE] — “the sound ‘ee’” is the simplest of all — a single vertical line, a single bright sound. Spread your lips wide as if smiling and say “ee” like in “feet” or “see.” This vowel is everywhere in Korean: 이 (i) [EE] — “this / two” and 미소 (miso) [MEE-soh] — “smile.” The vertical shape mirrors the way your mouth stretches horizontally — another brilliant visual clue built right into Hangeul’s design.

Complete Pronunciation Reference Table