Korean Y-Glide Vowels: ㅑ ㅕ ㅛ ㅠ ㅒ ㅖ

Two Strokes Mean One Thing: The Y-Glide Rule

In the previous lesson, you mastered the 8 basic monophthongs.

Now, King Sejong introduces an elegant graphic shorthand: whenever you see a vowel with an extra short stroke, you instantly add an initial [y] sound (IPA: [j]) to the pronunciation!

[Basic Vowel (1 stroke)]              [Y-Glide Vowel (2 strokes)]
ㅏ (a)         + extra stroke  ──►    ㅑ (ya)
ㅓ (eo)        + extra stroke  ──►    ㅕ (yeo)
ㅗ (o)         + extra stroke  ──►    ㅛ (yo)
ㅜ (u)         + extra stroke  ──►    ㅠ (yu)
ㅐ (ae)        + extra stroke  ──►    ㅒ (yae)
ㅔ (e)         + extra stroke  ──►    ㅖ (ye)

You do not need to learn six brand-new mouth positions. You simply take the mouth shapes you already know and prefix them with a frictionless, split-second tongue glide [j] (like the y in yes or yoga).

1. The 6 Y-Glide Diphthongs

1. ㅑ [ja] — Y + ㅏ

• Pronunciation: Rapid glide into wide open ㅏ. Like ya in yard.
• Vocabulary: 야구 (yagu = baseball), 약 (yak = medicine), 양말 (yangmal = socks)

2. ㅕ [jʌ] — Y + ㅓ

• Pronunciation: Rapid glide into unrounded, jaw-dropped ㅓ. Like yeo in young (British) or yawn.
• Vocabulary: 여자 (yeoja = woman), 여행 (yeohaeng = trip/travel), 여름 (yeoreum = summer)

3. ㅛ [jo] — Y + ㅗ

• Pronunciation: Rapid glide into tightly rounded ㅗ. Like yo in yoga or yo-yo.
• Vocabulary: 요리 (yori = cooking), 요즘 (yojeum = nowadays), 월요일 (woryoil = Monday)

4. ㅠ [ju] — Y + ㅜ

• Pronunciation: Rapid glide into pursed ㅜ. Like yu in music or you.
• Vocabulary: 유리 (yuri = glass), 휴지 (hyuji = tissue), 유학 (yuhak = studying abroad)

5. ㅒ [jɛ] — Y + ㅐ

• Pronunciation: Rapid glide into open front ㅐ. Like ye in yankee.
• Vocabulary: 얘기 (yaegi = story/chat), 걔 (gyae = that kid)

6. ㅖ [je] — Y + ㅔ

• Pronunciation: Rapid glide into mid front ㅔ. Like ye in yes.
• Vocabulary: 예 (ye = yes), 시계 (sigye = clock/watch), 예술 (yesul = art)

2. Real-World Phonology: The ‘계’ Relaxation Rule

According to the official National Institute of Korean Language (국립국어원) Standard Pronunciation Rules (§8):

When ㅖ is preceded by any consonant other than silent ‘ㅇ’ (e.g., 계, 례, 몌, 폐, 혜), it is officially permitted to be pronounced as simple [ㅔ].

• 시계 (clock): Written as si-gye, but standardly pronounced [시게 (sige)].
• 혜택 (benefit): Written as hye-taek, but almost universally spoken as [헤택 (hetaek)].
• 연예인 (celebrity): Here ㅖ follows silent ㅇ, so it retains its full glide: [여녜인 (yeon-ye-in)].

This rule is a lifesaver for learners! If pronouncing a consonant plus a y-glide feels like a tongue-twister, modern Korean naturally allows you to relax it to [ㅔ].

3. Colloquial Contractions: 이야기 to 얘기

In casual Korean, syllables with high frequency love to compress:

• 이야기 (i-ya-gi = 4 syllables) ──► 얘기 (yae-gi = 2 syllables!)
• 이 아이 (i a-i = this child) ──► 얘 (yae = this kid)
• 그 아이 (geu a-i = that child) ──► 걔 (gyae = that kid)
• 저 아이 (jeo a-i = that child over there) ──► 쟤 (jyae = that kid over there)

With these 6 Y-glide vowels added to your toolkit, half of all Korean compound vowels are officially conquered!