Polite Ending: The Magic 'Yo' (-ayo/eoyo)
요 ending for 90% of daily interactions to sound polite but friendly and natural.
Grammar Rule in 30 Seconds
Add 'yo' to the end of your verbs to turn plain speech into polite, everyday Korean conversation.
- If the last vowel is 'a' or 'o', add '-ayo'. Example: 가다 -> 가요.
- If the last vowel is anything else, add '-eoyo'. Example: 먹다 -> 먹어요.
- If the verb ends in 'hada', it becomes 'haeyo'. Example: 공부하다 -> 공부해요.
Overview
The -(아/어/여)요 ending, known as the Polite Informal Ending or 해요체 (haeyoche), is the cornerstone of modern Korean communication. It occupies a crucial middle ground in speech levels, offering politeness without the stiffness of formal address. This makes it ideal for a vast majority of daily interactions, serving as your primary means of polite expression in Korean.
For A1 learners, mastering -(아/어/여)요 is non-negotiable. It functions as the default polite present tense for all verbs and adjectives, and is central to conjugating the copula 이다 (ida, to be). Understanding and correctly applying this ending allows you to form grammatically sound, natural-sounding sentences, essential for interacting respectfully with new acquaintances, colleagues, and even older friends or family members.
Without it, your speech would either sound excessively formal, akin to news broadcasts, or impolitely casual, typically reserved for very intimate relationships. Its ubiquity extends to written communication like text messages and informal emails, solidifying its role as the most practical and versatile speech style.
Conjugation Table
| Original Form (Dictionary) | Stem (어간, eogan) |
Rule Applied | -(아/어/여)요 Form |
Romanization | Meaning | ||
|---|---|---|---|---|---|---|---|
| :------------------------ | :----------------- | :---------------------------------------------- | :-------------------- | :----------- | :---------------------- | ||
가다 (to go) |
가- |
ㅏ stem + 아요 → 가요 |
가요 |
gayo | go/goes/am going | ||
오다 (to come) |
오- |
ㅗ stem + 아요 → 와요 |
와요 |
wayo | come/comes/am coming | ||
보다 (to see) |
보- |
ㅗ stem + 아요 → 봐요 |
봐요 |
bwayo | see/sees/am seeing | ||
앉다 (to sit) |
앉- |
ㅏ stem (with batchim) + 아요 |
앉아요 |
anjayo | sit/sits/am sitting | ||
좋다 (to be good) |
좋- |
ㅗ stem (with batchim) + 아요 |
좋아요 |
joayo | is good/like | ||
먹다 (to eat) |
먹- |
non ㅏ/ㅗ stem (with batchim) + 어요 |
먹어요 |
meogeoyo | eat/eats/am eating | ||
읽다 (to read) |
읽- |
non ㅏ/ㅗ stem (with batchim) + 어요 |
읽어요 |
ilgeoyo | read/reads/am reading | ||
배우다 (to learn) |
배우- |
ㅜ stem + 어요 → 워요 |
배워요 |
baewoyo | learn/learns/am learning | ||
주다 (to give) |
주- |
ㅜ stem + 어요 → 줘요 |
줘요 |
jwoyo | give/gives/am giving | ||
마시다 (to drink) |
마시- |
ㅣ stem + 어요 → 셔요 |
마셔요 |
masyeoyo | drink/drinks/am drinking | ||
기다리다 (to wait) |
기다리- |
ㅣ stem + 어요 → 려요 |
기다려요 |
gidaryeoyo | wait/waits/am waiting | ||
공부하다 (to study) |
공부하- |
하다 verb irregular → 해요 |
공부해요 |
gongbuhaeyo | study/studies/am studying | ||
운동하다 (to exercise) |
운동하- |
하다 verb irregular → 해요 |
운동해요 |
undonghaeyo | exercise/exercises/am exercising | ||
있다 (to exist/have) |
있- |
ㅣ stem (with batchim) + 어요 |
있어요 |
isseoyo | is/has/have | ||
없다 (to not exist/have) |
없- |
ㅓ stem (with batchim) + 어요 |
없어요 |
eopseoyo | is not/don't have | ||
덥다 (to be hot) |
덥- (ㅂ irregular) |
ㅂ → ㅜ + 어요 → 워요 |
더워요 |
deowoyo | is hot | ||
듣다 (to listen) |
듣- (ㄷ irregular) |
ㄷ → ㄹ + 어요 |
들어요 |
deureoyo | listen/listens/am listening | ||
모르다 (to not know) |
모르- (르 irregular) |
르 → ㄹ라 (preceding ㅗ) + 요 |
몰라요 |
mollayo | don't know | ||
부르다 (to call/sing) |
부르- (르 irregular) |
르 → ㄹ러 (preceding ㅜ) + 요 |
불러요 |
bulleoyo | call/sings/am calling | ||
쓰다 (to write/use) |
쓰- (ㅡ irregular) |
ㅡ drops + 어요 → 써요 |
써요 |
sseoyo | write/writes/am writing | ||
예쁘다 (to be pretty) |
예쁘- (ㅡ irregular) |
ㅡ drops + 어요 → 예뻐요 |
예뻐요 |
yeppeoyo | is pretty | ||
이다 (N: vowel) |
의사 |
noun ends in vowel + 예요 |
의사예요 |
uisayeoyo | is a doctor | ||
이다 (N: consonant) |
학생 |
noun ends in consonant + 이에요 |
학생이에요 |
haksaeng-ieyo | is a student |
How This Grammar Works
-(아/어/여)요 ending is a sophisticated yet highly regular grammatical construct central to Korean morphophonemics. It functions not just to mark the present tense, but crucially, to convey politeness to the listener. The final 요 (yo) itself is a deferential particle, universally signaling respect without changing the verb's declarative, interrogative, imperative, or propositive function.-아요 (-ayo), -어요 (-eoyo), or the contracted -여요 (which always becomes -해요, -haeyo) is fundamentally driven by vowel harmony (모음조화, moumjohwa). Vowel harmony is a core phonological principle in Korean where vowels within a word or across morpheme boundaries tend to align based on their phonetic properties, creating a smoother, more aesthetically pleasing sound. "Bright" or "yang" vowels (ㅏ, ㅗ) attract other bright vowels, while "dark" or "yin" vowels (ㅓ, ㅜ, ㅡ, ㅣ, etc.) attract other dark vowels.어간, eogan), which is the base form remaining after removing the dictionary ending 다 (-da). For instance, from 자다 (jada, to sleep), you remove 다 to get the stem 자- (ja-). This systematic process ensures phonetic flow and grammatical correctness, making the -(아/어/여)요 form the backbone of polite spoken Korean.오- + 아요 → 와요) are not arbitrary but are a result of this principle of phonetic efficiency, streamlining pronunciation.Formation Pattern
-(아/어/여)요 form follows a precise algorithm based on the stem's final vowel. The 요 particle is consistently appended at the end to signify politeness.
어간, eogan): Always remove the dictionary form ending 다 (-da) from the verb or adjective. The remaining part is the stem.
하다 (hada, to do) → Stem: 하- (ha-)
읽다 (ikda, to read) → Stem: 읽- (ik-)
-아요 or -어요.
ㅏ (a) or ㅗ (o) – Use -아요
yangseong) vowels. They harmonize with the ㅏ of -아요.
ㅏ (no final consonant): The stem's ㅏ merges with the ㅏ of -아요. Effectively, you just add 요.
가다 (gada, to go) → 가- + 아요 → 가요 (gayo). (Not 가아요)
ㅗ (no final consonant): The stem's ㅗ merges with the ㅏ of -아요 to form ㅘ (wa).
오다 (oda, to come) → 오- + 아요 → 와요 (wayo). (Not 오아요)
보다 (boda, to see) → 보- + 아요 → 봐요 (bwayo).
받침, batchim) and the vowel preceding the consonant is ㅏ or ㅗ: Add -아요 directly.
앉다 (anjda, to sit) → 앉- + 아요 → 앉아요 (anjayo).
좋다 (jota, to be good) → 좋- + 아요 → 좋아요 (joayo).
ㅓ, ㅜ, ㅡ, ㅣ, ㅐ, ㅔ, etc.) – Use -어요
eumseong) or neutral vowels. They harmonize with the ㅓ of -어요.
ㅜ (no final consonant): The stem's ㅜ merges with the ㅓ of -어요 to form 워 (wo).
배우다 (baeuda, to learn) → 배우- + 어요 → 배워요 (baewoyo).
주다 (juda, to give) → 주- + 어요 → 줘요 (jwoyo).
ㅣ (no final consonant): The stem's ㅣ merges with the ㅓ of -어요 to form ㅕ (yeo).
마시다 (masida, to drink) → 마시- + 어요 → 마셔요 (masyeoyo).
기다리다 (gidarida, to wait) → 기다리- + 어요 → 기다려요 (gidaryeoyo).
받침, batchim) and the vowel preceding the consonant is not ㅏ or ㅗ: Add -어요 directly.
먹다 (meokda, to eat) → 먹- + 어요 → 먹어요 (meogeoyo).
읽다 (ikda, to read) → 읽- + 어요 → 읽어요 (ilgeoyo).
ㅔ (e), ㅐ (ae), or ㅚ (oe) (no final consonant): Add -어요 directly. Note that ㅔ + 어요 does not contract, but ㅐ + 어요 often remains ㅐ요 or ㅐ어요 and ㅚ + 어요 contracts to 왜요.
보내다 (bonaeda, to send) → 보내- + 어요 → 보내요 (bonaeyo).
되다 (doeda, to become) → 되- + 어요 → 돼요 (dwaeyo).
하다 Verbs – Always -해요
하다 (hada) always transforms into -해요 (-haeyo). This is a ubiquitous and essential irregular pattern. Historically, 하다 combined with the 어 part of -어요 to form 하 + 여요 (hayeoyo), which then naturally contracted to 해요 for ease of pronunciation and phonetic efficiency.
공부하다 (gongbuhada, to study) → 공부해요 (gongbuhaeyo).
사랑하다 (saranghada, to love) → 사랑해요 (saranghaeyo).
이다 (ida, to be)
이다 (ida, to be) attaches to nouns. Its polite informal form depends on the preceding noun's final sound:
받침, batchim): Add -이에요 (-ieyo).
학생 (haksaeng, student) + 이다 → 학생이에요 (haksaeng-ieyo).
-예요 (-yeyo). This is a contraction of 이 + 에요 → 예요.
의사 (uisa, doctor) + 이다 → 의사예요 (uisayeoyo).
-(아/어/여)요)
-(아/어/여)요 ending is applied. The vowel harmony rule then applies to the modified stem. For A1 learners, recognizing these common types is vital.
ㅂ Irregular (e.g., 덥다, 돕다): Verbs whose stem ends in ㅂ (b) often change ㅂ to ㅜ (u) or ㅗ (o) when followed by a vowel ending. Then, the standard vowel harmony rule applies.
ㅂ changes to ㅜ: ㅜ + 어요 → 워요. Example: 덥다 (deopda, to be hot) → 더우- → 더워요 (deowoyo).
ㅂ changes to ㅗ (only for 돕다 and 곱다): ㅗ + 아요 → 와요. Example: 돕다 (dopda, to help) → 도오- → 도와요 (dowayo).
ㄷ Irregular (e.g., 듣다, 걷다): Verbs whose stem ends in ㄷ (d) change ㄷ to ㄹ (l) when followed by a vowel ending.
듣다 (deutda, to listen) → 들- + 어요 → 들어요 (deureoyo).
ㅡ Irregular (e.g., 쓰다, 예쁘다): Verbs/adjectives whose stem ends in ㅡ (eu) often drop ㅡ when ㅏ or ㅓ follows. The vowel of the preceding syllable (if any) determines if -아요 or -어요 is used. If there's no preceding syllable, -어요 is the default.
쓰다 (sseuda, to write/use) → 쓰- → ㅆ- + 어요 → 써요 (sseoyo). (The ㅡ drops, and since there's no preceding vowel, -어요 is chosen).
예쁘다 (yeppeuda, to be pretty) → 예쁘- → 예뻐- + 어요 → 예뻐요 (yeppeoyo). (The ㅡ drops, and the preceding vowel ㅔ (e) causes 어요 to be chosen).
르 Irregular (e.g., 모르다, 부르다): Verbs/adjectives ending in 르 (reu) change 르 to ㄹ라 or ㄹ러. The vowel of the syllable preceding 르 determines this choice.
르 is ㅏ or ㅗ: 르 becomes ㄹ라. Example: 모르다 (moreuda, to not know) → 모르- → 몰라요 (mollayo). (The vowel before 르 is ㅗ)
르 is any other vowel: 르 becomes ㄹ러. Example: 부르다 (bureuda, to call/sing) → 부르- → 불러요 (bulleoyo). (The vowel before 르 is ㅜ)
ㅎ Irregular (e.g., 빨갛다, 어떻다): For descriptive verbs (adjectives) whose stem ends in ㅎ and a vowel (ㅏ, ㅐ, ㅗ, ㅜ), the ㅎ often drops, and the remaining vowels combine when -(아/어/여)요 is attached.
빨갛다 (ppalgata, to be red) → 빨개- + 요 → 빨개요 (ppalgaeyo). (The ㅎ drops, and ㅏ and ㅐ combine).
어떻다 (eotteota, how) → 어때- + 요 → 어때요 (eottaeyo).
When To Use It
-(아/어/여)요 ending as your default polite speech form in almost all everyday contexts. It is the most common and socially safe choice, conveying respect without being overly formal.- General Interactions: This form is appropriate with strangers, shopkeepers, service staff, and in most public settings. Whether ordering food (
주세요,juseyo), asking for directions (어디예요?,eodiyeyo?), or buying something (얼마예요?,eolmayeyo?),-(아/어/여)요is the expected level of politeness. - Acquaintances and Colleagues: It is suitable for professional environments, among peers, or with individuals of similar social standing. It maintains a respectful distance while allowing for comfortable conversation. For instance,
오늘 회의에 참석해요.(oneul hoeui-e chamseokhaeyo, I am attending today's meeting.) - Older Friends and Some Family Members: While
반말(banmal, casual speech) is common with very close peers,-(아/어/여)요is often used out of respect for friends who are older than you or for family members like older siblings and cousins. It signals familiarity with an underlying tone of politeness, as in형, 잘 지내세요?(hyeong, jal jinaeseyo?, Older brother, are you doing well?). - Asking Questions: To form a polite question, simply use the
-(아/어/여)요form with a rising intonation at the end. The verb form itself does not change. For example,이거 뭐예요?(igeo mwoyeyo?, What is this?) - Informal Written Communication: For digital communication like text messages (KakaoTalk), casual emails, or social media posts,
-(아/어/여)요is the standard. It maintains a friendly, respectful tone. For example,내일 만나요!(naeil mannayo!, Let's meet tomorrow!).
-(아/어/여)요. It is the most universally accepted and grammatically safe polite form, minimizing the risk of sounding rude or awkward.When Not To Use It
-(아/어/여)요 is widely applicable, specific situations demand different speech styles. Misusing 해요체 can lead to misunderstandings or be perceived as inappropriate.- Highly Formal Situations: For contexts requiring extreme formality, such as news broadcasts, military settings, public speeches, formal presentations, or official documents, the
-(스)ㅂ니다(-(seu)mnida) ending (the합니다체,hamnida-che) is mandatory. Using-(아/어/여)요here would sound too casual and unprofessional. For example, a news anchor would say뉴스를 시작하겠습니다.(nyuseureul sijakhagesseumnida, I will begin the news.) not뉴스를 시작해요. - Addressing Very Young Children or Animals: In these specific contexts,
반말(banmal, casual speech) is natural and expected. Using-(아/어/여)요would sound overly formal or even peculiar. You would say밥 먹어.(bap meogeo, Eat.) to a child, not밥 먹어요. - With Very Close Friends, Younger Siblings, or Those Significantly Younger: In intimate relationships where you are of similar age or clearly older,
반말is the established norm. Employing-(아/어/여)요in such situations can create an unintended sense of distance or imply you are not as close as you might think. Saying뭐 해?(mwo hae?, What are you doing?) to a close friend is natural, whereas뭐 해요?might sound strange. - Academic Papers or Official Reports: Formal written Korean, especially in academic or highly official contexts, typically employs dictionary forms (
-다) or other formal endings, rather than-(아/어/여)요, which is primarily for spoken or informal written communication. A research paper would state연구 결과가 중요하다.(yeongu gyeolgwa-ga jungyohada, The research results are important.) rather than연구 결과가 중요해요.
Common Mistakes
-(아/어/여)요. Recognizing these common error patterns can significantly accelerate your learning.- **The
Conjugation Rules
| Verb Type | Last Vowel | Suffix | Example |
|---|---|---|---|
|
a/o
|
a, o
|
-ayo
|
가다 -> 가요
|
|
other
|
u, i, eo
|
-eoyo
|
먹다 -> 먹어요
|
|
hada
|
ha
|
-haeyo
|
공부하다 -> 공부해요
|
Meanings
The -ayo/eoyo ending is the standard polite form used in daily life to show respect while maintaining a friendly tone.
Polite Statement
Used to make a polite declaration.
“저는 학생이에요.”
“날씨가 좋아요.”
Polite Question
Used to ask a question politely by adding a rising intonation.
“어디에 가요?”
“뭐를 먹어요?”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Affirmative
|
Stem + ayo/eoyo
|
가요
|
|
Negative
|
An + Stem + ayo/eoyo
|
안 가요
|
|
Question
|
Stem + ayo/eoyo?
|
가요?
|
|
Past
|
Stem + ass/eoss + eoyo
|
갔어요
|
|
Future
|
Stem + geoyeyo
|
갈 거예요
|
|
Polite Request
|
Stem + juseyo
|
가 주세요
|
Formality Spectrum
먹습니다 (Daily life)
먹어요 (Daily life)
먹어 (Daily life)
먹어 (Daily life)
The Vowel Split
A or O
- 가다 go
Other
- 먹다 eat
Examples by Level
사과를 먹어요.
I eat an apple.
어디에 가요?
Where are you going?
한국어를 공부해요.
I study Korean.
커피를 마셔요.
I drink coffee.
오늘 날씨가 좋아요.
The weather is good today.
저는 바쁘지 않아요.
I am not busy.
영화를 봐요?
Are you watching a movie?
집에 가요.
I am going home.
내일 친구를 만나요.
I am meeting a friend tomorrow.
이것은 너무 비싸요.
This is too expensive.
선생님을 기다려요.
I am waiting for the teacher.
음악을 들어요.
I listen to music.
그렇게 생각하지 않아요.
I don't think so.
도와주셔서 고마워요.
Thank you for helping me.
시간이 없어서 못 가요.
I can't go because I have no time.
준비가 다 되었어요.
Everything is ready.
상황이 조금 복잡해요.
The situation is a bit complicated.
그 제안은 받아들이기 어려워요.
That proposal is hard to accept.
다시 한번 말씀해 주세요.
Please say it one more time.
결정을 내리기가 쉽지 않아요.
It is not easy to make a decision.
그렇게 말씀하시는 이유가 궁금해요.
I am curious about the reason you say that.
모든 것이 순조롭게 진행되고 있어요.
Everything is proceeding smoothly.
그 점은 충분히 고려해야 해요.
That point must be sufficiently considered.
예상했던 것보다 훨씬 훌륭해요.
It is much better than I expected.
Easily Confused
Learners mix up the formality levels.
Learners forget the vowel rule.
Applying vowel rule to Hada.
Common Mistakes
gadayo
gayo
meokayo
meogeoyo
gongbuayo
gongbuhaeyo
jayo
jayo
bayo
bwayo
haayo
haeyo
an gayo
an gayo
deuteoyo
deureoyo
areumdawoyo
areumdawoyo
moreoyo
mollaeyo
Sentence Patterns
저는 ___를 먹어요.
저는 ___에 가요.
저는 ___를 공부해요.
오늘 ___를 봐요.
Real World Usage
지금 뭐 해요?
커피 주세요.
질문 있어요.
이거 얼마예요?
사진 예뻐요!
어디에 있어요?
Listen for 'yo'
Watch the vowels
Hada is your friend
Smile when you say it
Smart Tips
Check the last vowel immediately.
When in doubt, use -eoyo.
Always use -ayo/eoyo.
Keep it consistent.
Pronunciation
Yo ending
The 'yo' is always pronounced with a soft 'y' sound.
Question
가요? (rising)
Are you going?
Memorize It
Mnemonic
Think of 'Yo' as a 'Polite Yo-yo'—it bounces onto the end of every verb to keep the conversation friendly.
Visual Association
Imagine a friendly robot adding a 'Yo' sticker to every action it performs.
Rhyme
If it ends in A or O, add A-yo to make it go. If it's any other sound, E-yo is the one you've found.
Story
Min-su is learning Korean. He meets a new friend. He wants to say 'I eat.' He remembers the rule: 'Eat' is 'meokda'. 'eo' is not 'a' or 'o', so he adds 'eoyo'. He says 'Meogeoyo!' and his friend smiles.
Word Web
Challenge
Write down 5 things you do every day using the -ayo/eoyo form.
Cultural Notes
Using -ayo/eoyo shows you respect the other person's status.
The -ayo/eoyo ending evolved from older, more complex honorific systems.
Conversation Starters
어디에 가요?
뭐를 먹어요?
한국어를 공부해요?
오늘 바빠요?
Journal Prompts
Common Mistakes
Test Yourself
저는 집에 ___.
먹다 -> ?
Find and fix the mistake:
공부아요
먹어요 / 사과 / 를
영화를 ___.
Match each item on the left with its pair on the right:
가요
Hada verbs use -ayo.
Score: /8
Practice Exercises
8 exercises저는 집에 ___.
먹다 -> ?
Find and fix the mistake:
공부아요
먹어요 / 사과 / 를
영화를 ___.
자다
가요
Hada verbs use -ayo.
Score: /8
Practice Bank
10 exercises백화점에서 옷을 ___.
저는 학생___.
오늘 날씨가 춥어요.
Arrange: / 공부해요 / 한국어를 / 저는 /
Match the verbs.
책을 ___.
집에 가어요.
음악을 ___.
저는 오늘 너무 ___.
How do you ask 'Is it delicious?'
Score: /10
FAQ (8)
It makes your speech polite and friendly.
Use -eoyo.
Maybe, but formal speech is safer.
No, 'da' is plain form.
It's a very common verb type.
Raise your pitch.
People will still understand, but it might sound odd.
Yes, in casual writing.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Verb conjugation
Korean doesn't change for 'I/you/he'.
Vouvoiement
Korean changes the verb itself.
Sie-form
Korean is more integrated into the verb.
Desu/Masu
Japanese has more complex verb endings.
Verb conjugation
Korean is gender-neutral.
None
Korean is highly agglutinative.
Learning Path
Prerequisites
Related Grammar Rules
Talking About the Past in Korean: The 았/었/였 Rules
Overview The Korean past tense, primarily expressed through the suffix **-았/었/였-**, is fundamental for conveying acti...
Future Tense: Will & Going To ((으)ㄹ 거예요)
Overview When communicating in Korean, articulating future actions, intentions, or predictions is fundamental. The gramm...
Past Tense: Did you do it? (았/었/였)
Overview To master Korean, you must accurately describe events that have already transpired. The past tense, realized th...
Identifying the Verb Stem (어간)
Overview In Korean, verbs (`동사`, *dongsa*) and adjectives (`형용사`, *hyeong-yongsa*), often collectively referred to...
Present Tense: The Polite 'Yo' Style (아/어/여요)
Overview Korean verbal conjugation might initially seem complex due to its multiple politeness levels and shifting endin...
