ㅐ vs ㅔ: The Korean Vowels That Sound the Same, and Why Koreans Say 니가

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개 means dog and 게 means crab. The pronunciation standard gives them two different vowels, yet most Korean speakers today say the two words the same way. That gap between the spelling and the sound explains a whole set of things learners find confusing: why your friends say 니가 when the textbook says 네가, why Koreans themselves misspell 돼요, and why 시계 (clock) often comes out as 시게.

Hear it for yourself. Tap the speaker beside each line and compare the first word:

If the two sound the same to you, that is the merger at work.

What the standard says, and what people actually say

Korea's official pronunciation rules (표준 발음법, Part 2 of the Standard Language Rules) list ten simple vowels in Article 4: ㅏ ㅐ ㅓ ㅔ ㅗ ㅚ ㅜ ㅟ ㅡ ㅣ. The commentary that comes with the article sorts them by where the tongue sits and whether the lips are rounded:

Tongue	Front	Front, round lips	Back	Back, round lips
High	ㅣi	ㅟwi	ㅡeu	ㅜu
Mid	ㅔe	ㅚoe	ㅓeo	ㅗo
Low	ㅐae		ㅏa

merged in most people's speechpairs that still change meaning

Look at the two pink cells. In the standard, ㅔ and ㅐ differ only in height: for ㅐ the jaw drops a little further and the tongue sits lower. That is the only thing that separates them, and in most people's speech it has gone.

The official commentary on Article 4 says so itself. It states that most generations today no longer keep ㅐ and ㅔ apart, and that the two have effectively merged into one vowel. The standard keeps them separate anyway, for two reasons: there is still a generation of speakers who distinguish them, so the merger is not complete, and the two vowels have held a stable place in the language for a long time.

The side effect: why people say 니가 and 너가

Here the merger stops being a phonetics footnote. In casual Korean, I and you as the subject of a sentence are:

Two of the most important words in any conversation now differ only by ㅐ versus ㅔ. For most speakers, “I did it” and “you did it” sound the same. So speakers changed the word instead. In casual speech, 니가 is widely used for you, and some people say 너가.

The National Institute of Korean Language (국립국어원), which looks after the standard, has answered this question many times, and its answer does not change. 너 plus the subject particle 가 is written 네가; 니가 and 너가 are not standard forms. 니가 is acceptable in written dialogue, such as a novel or a drama script, where the line should sound like real speech. In one answer the institute even names the reason people avoid 네가: in speech it is hard to tell apart from 내가.

The same thing happens with my and your. 내 (my) and 네 (your) sound alike, so in casual speech many people say 니 for your as well.

ㅙ, ㅞ and ㅚ: three spellings, often one sound

The merger spreads to the compound vowels. ㅙ is a w sound plus ㅐ, and ㅞ is a w sound plus ㅔ, so once ㅐ and ㅔ sound alike, so do these two. The third member of the group is ㅚ. Article 4 lists it as a simple vowel, but a note attached to the article allows it to be pronounced as a diphthong instead, and the commentary explains that this diphthong is the same as ㅞ. Its own example is 회, which can be said [회] or [훼], and both are standard.

The Standard Korean Language Dictionary records both pronunciations too: 외국 (foreign country) is listed as [외ː국/웨ː국], and 되다 (to become) as [되다/뒈다]. So for many speakers, 왜 (why), the first syllable of 외국 and the first syllable of 웨딩 (wedding) all start with the same sound. That is why Koreans themselves need a spelling trick for 되다, a verb they use every day.

The two-second test for 되 and 돼

되다 means to become, to be possible or to be all right, and it is everywhere: 돼요, 안 돼, 됐어요. 돼 is simply a contraction of 되어, the stem 되- plus the ending -어 (the same ending that builds the polite -아요/-어요 form of every verb), and the spelling rules (Hangul Orthography, Article 35, note 2) say to write it the way it is shortened: 되어 → 돼, 되었다 → 됐다. Because 되 and 돼 sound the same, Korean writers mix them up so often that the National Institute of Korean Language keeps answering the question. The test it recommends is a swap:

Not sure about	Swap in 하 / 해	So write
되요? 돼요?	하요 ✗  해요 ✓	돼요
안 되 / 안 돼	안 하 ✗  안 해 ✓	안 돼
됬어요? 됐어요?	했어요 ✓	됐어요
되고 / 돼고	하고 ✓  해고 ✗	되고
되면 / 돼면	하면 ✓  해면 ✗	되면

The same rule explains a polite goodbye that trips up Korean writers too. 뵈다 is the humble verb for seeing someone you respect, and 뵈어요 contracts to 봬요, so the phrase is 내일 봬요, never 뵈요.

ㅖ after a consonant: why 시계 sounds like 시게

Article 5 of the pronunciation rules lists ㅖ as a diphthong, ye. One of its exceptions says that ㅖ may also be pronounced as a plain [ㅔ] in every syllable except 예 and 례. Both pronunciations are standard. The rule's own examples include 시계 [시계/시게] (clock, watch) and 혜택 [혜ː택/헤ː택] (benefit), and the commentary explains why the exception exists: outside 예 and 례, the plain [ㅔ] is what people say very often. It is one of several places where spoken Korean parts ways with the spelling; the others, such as 좋아요 sounding like 조아요, are covered in this guide to Korean pronunciation rules.

Word	Meaning	Also standard
시계 sigye	clock, watch	[시게]
세계 segye	world	[세게]
계산 gyesan	calculation; paying the bill	[게산]
혜택 hyetaek	benefit	[헤택]
차례 charye	turn, order	keeps ye: 례 is an exception
예약 yeyak	reservation	keeps ye: 예 is an exception

When you hear [게산] in a restaurant, the spelling is still 계산, while 가게 (shop) has a real 게. Your ears cannot sort these out for you; the final section of this article shows how Koreans handle the spelling instead.

The vowel pairs you do need to hear

Go back to the blue cells in the vowel chart. In the standard chart, ㅓ and ㅗ sit in the same row and differ in lip rounding; in real speech ㅓ is also lower, with the jaw more open, which is why phonetic descriptions of Korean write it [ʌ] and ㅗ [o]. ㅡ and ㅜ share a tongue position and differ in the lips. ㅗ and ㅜ are both rounded and differ in tongue height. The commentary on Article 4 describes ㅐ and ㅔ as merged and says nothing of the kind about these three pairs, and each of them separates very common words. Mix them up and people will hear a different word, so this is where your listening and speaking practice pays off.

The chart is a little out of date for ㅗ and ㅜ as well. Studies of Seoul speech have measured ㅗ rising to about the height of ㅜ in younger speakers, who now keep the two apart mainly by saying ㅜ further forward in the mouth, and young listeners still identify them with high accuracy. The pair is shifting, not merging, and the textbook recipe above remains a safe target for your own speech.

Spelling ㅐ and ㅔ: learn the word, not the sound

Since your ears can't tell you whether a word has ㅐ or ㅔ, the spelling has to come from somewhere else. Koreans learn it word by word, the way English speakers learn their and there. A few families cover most of what a beginner writes:

Written with ㅔ	Written with ㅐ
Particles: 에, 에서, 에게, 께	The 해 form of 하다: 해요, 했어요, 해서, 해야
Endings: -세요 (가세요), -네요 (예쁘네요), -게 (맛있게 드세요), -는데 (비가 오는데)	매일 (every day), 새 (new; bird), 해 (sun; year)
Numbers before a counter: 세 (three), 네 (four): 세 개, 네 명	내 (my), 내가 (I)

Then there are the short words that differ only in this vowel. These are the ones to learn as pairs:

대게 (snow crab) shows the problem in one word: ㅐ then ㅔ, usually said with the same vowel. Notice also that 네 개 can mean “four of them” or “your dog”, and in speech it sounds just like 내 개, “my dog”. Koreans get by with one vowel because the sentence around a word almost always settles which one is meant.

Frequently asked questions

Is there a difference between ㅐ and ㅔ in Korean?

On paper, yes. Korea's pronunciation standard lists them as two vowels: ㅔ is said with the tongue a little higher, ㅐ with the mouth a little more open. In everyday speech, the official commentary on that rule admits that most generations no longer distinguish them. Use one vowel, roughly the e in English bed, and learn the spelling of each word.

Why do Koreans say 니가 instead of 네가?

Because 네가 (you, as the subject) and 내가 (I) sound the same once ㅐ and ㅔ merge. 니가 and 너가 avoid the confusion. The National Institute of Korean Language says the standard spelling is 네가; 니가 is widely used in speech and fine in written dialogue, but it is not standard, and neither is 너가.

How do I know whether to write 되 or 돼?

돼 is short for 되어. Put 하 or 해 in the same slot: if 해 sounds right, write 돼 (돼요, 안 돼, 됐어요); if 하 sounds right, write 되 (되다, 되고, 되면). 되요 is always a misspelling.

Why does 시계 sound like 시게?

Article 5 of the pronunciation standard allows ㅖ to be pronounced as ㅔ in every syllable except 예 and 례. 시계 can therefore be said [시계] or [시게], and both are standard. 차례 and 예약 keep the y sound.

Do ㅙ, ㅞ and ㅚ sound different?

For most speakers, no. ㅙ is w + ㅐ and ㅞ is w + ㅔ, so they sound alike once ㅐ and ㅔ merge, and the standard allows ㅚ to be pronounced as a diphthong identical to ㅞ: 회 can be [회] or [훼]. So 왜 (why), the first syllable of 외국 (foreign country) and the first syllable of 웨딩 (wedding) usually start the same way. Learn each word's spelling.

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