요 Polite Particle: Meaning, Rules and Examples

The 요 polite particle is a short Korean particle that attaches to a word, a phrase or a clause ending to make it polite. It adds no new meaning: 어디 means "where?" and 어디요 means the same thing, said politely. After this lesson you can use 요 on its own and tell it apart from verb endings.

What you'll learn

• Attach 요 to a noun, an adverb or a clause ending to make it polite.
• Choose 요 or 이요 by the final sound of the noun.
• Distinguish 요 from -아요/어요 and from -ㅂ니다 in a new sentence.
• Diagnose the error in 감사합니다요 and fix it.

Before you start: you can read Hangul, you know that Korean has speech levels, and you have met a few polite sentences such as 학생이에요 or 먹어요. Estimated time: 20 minutes.

What Does the 요 Polite Particle Mean?

The 요 polite particle means nothing by itself. It marks the speaker's politeness toward the listener. A particle (조사, josa) is a short word or ending glued to another word to show its job. A speech level is the style of speaking that fits the listener: casual with friends, polite with most adults, formal in announcements.

Compare the same words with and without 요.

Friends can say the left column to each other. A shop assistant, a teacher or someone you have just met should hear the right column. This casual style is called 반말 (banmal), and the lesson on how to make banmal casual speech shows how it works. The polite style with 요 is called 해요체 (haeyo-che), covered in the lesson on 해요체 polite speech -아요/어요.

A First Example

Two short answers show how 요 works on words that are not full sentences. Both would be heard in daily life.

• 어디요? (eodiyo) [어디요] = "Where?" or "Where do you mean?" Word by word: 어디 (where) + 요 (polite). Someone says 저기에 가 보세요 ("Please go over there"), and you ask back 어디요? with rising intonation.

• 천천히요. (cheoncheonhiyo) [천천히요] = "Slowly, please." Word by word: 천천히 (slowly) + 요 (polite). A taxi driver asks 어떻게 갈까요? ("How shall I drive?") and you answer 천천히요.

Notice two things. First, 요 sits directly on the word with no space, and the word before it can be a question word, an adverb or a noun. Second, the sentence has no verb at all, yet it is complete and polite. The next section explains where 요 can attach.

How Does the 요 Polite Particle Work?

The 요 polite particle works by attaching to the end of whatever you want to say politely. The choice of form depends on the type of word and, for nouns, on the final sound.

1. Find the last word or ending in your phrase.
2. If it is an adverb, a question word or a connective ending, attach 요 directly: 천천히요, 어디요, 먹고요.
3. If it is a noun that ends in a vowel, attach 요 directly: 커피요, 저요.
4. If it is a noun that ends in a consonant, attach 이요: 김밥이요, 물이요.
5. Write the result with no space.

Most grammars explain the 이 in step 4 as the copula 이다 ("to be"), so 김밥이요 is close to 김밥이에요 ("it's kimbap"). Many speakers also say 김밥요, with the particle attached directly, and references differ on which spelling to prefer. This course teaches 이요 after a consonant, the form you will hear most.

Pattern Table

The table shows what 요 attaches to, with one example for each type. Brackets show pronunciation where it differs from the spelling.

The last row is special: the 요 in 먹어요 is the same 요, and it is covered in the comparison section below. The clause endings -고, -는데 and -거든 are normally followed by more words. When a speaker stops after them and adds 요, the sentence becomes a polite, complete statement that invites a reply. The form rule is now clear, so the next section builds one answer from its parts.

Worked Example, Step by Step

This worked example builds the answer 김밥이요 ("Kimbap, please") to the question 뭐 드릴까요? ("What would you like?"). Each step names one decision, so you can repeat the process with any noun.

1. Hear the question. 뭐 드릴까요? is a polite question from a waiter. It expects a short answer.
2. Choose the noun. You want kimbap, which is 김밥.
3. Check the last sound. 밥 ends in the consonant ㅂ, with a letter under the vowel.
4. Pick the form. A consonant ending takes 이요, so the answer is 김밥이요.
5. Write it without a space. Not 김밥 이요, but 김밥이요.
6. Add the intonation. An answer falls slightly at the end. A question, such as 김밥이요? ("Did you say kimbap?"), would rise.
7. Say it aloud. The final ㅂ of 밥 slides into the empty ㅇ of 이, so the word is pronounced [김바비요].

You'll know it worked when you can switch the noun and still choose correctly. Try 커피 (coffee): it ends in a vowel, so 커피요. Try 물 (water): it ends in ㄹ, so 물이요, pronounced [무리요]. Try 저 (I, me): it ends in a vowel, so 저요.

Choosing the right form is only half of the skill. The next question is how this 요 relates to the 요 at the end of 먹어요 and to the formal ending.

How Is 요 Different from -아요/어요 and -ㅂ니다?

The 요 polite particle attaches to many kinds of words, -아요/어요 is a polite verb ending that already contains the same 요, and -ㅂ니다/습니다 is a formal ending that never takes 요. Seeing the three side by side removes most of the confusion.

Here is the key insight. A casual verb ending such as 먹어 ("eat") becomes polite when 요 is added: 먹어 plus 요 gives 먹어요. In other words, the polite style 해요체 is the casual style 해체 plus 요. That is why removing 요 from 먹어요 gives a casual sentence, and why a learner who knows the particle 요 already knows how to turn casual endings into polite ones. The same trick works on 가 / 가요, 와 / 와요, 좋아 / 좋아요.

The formal ending 먹습니다 does not follow this pattern. It is already polite and formal, so adding 요 sounds odd. Read the lesson on formal speech -ㅂ니다/습니다 to see where that style belongs. With the three forms separated, the next section lists when to use 요 and when to leave it out.

When Do You Use 요, and When Not?

Use 요 for short answers, echo questions, softened clauses and fixed polite words. Avoid it after formal endings and in very formal or written settings.

Four Common Uses

Each use comes with one example you can reuse.

1. Short polite answers. A: 뭐 드릴까요? B: 커피요. (keopiyo) = A: What would you like? B: Coffee, please.
2. Echo questions. A: 내일 만나요. B: 내일요? (naeiryo) = A: Let's meet tomorrow. B: Tomorrow? With rising intonation, 요 asks back politely.
3. Softened clause endings. 저는 학생이고요, 서울에 살아요. (jeoneun haksaengigoyo, seoure sarayo) = I'm a student, and I live in Seoul. The 요 after -고 makes a pause sound polite.
4. Giving a reason or setting the scene. 요즘 바쁘거든요. (yojeum bappeugeodeunyo) = I'm busy these days, you see. And 지금 비가 오는데요. (jigeum biga oneundeyo) = It's raining right now (so, keep that in mind).

Fixed Words with 요

Four everyday words already contain 요, so you do not need to add it.

• 아니요 (aniyo) = no. It is the polite "no" to a question. The casual form is 아니.
• 여기요 (yeogiyo) = excuse me, over here. Customers call waiters with it.
• 저기요 (jeogiyo) = excuse me. People use it to get a stranger's attention.
• 정말요? (jeongmaryo) [정말료] = really? A polite way to react with surprise. The 요 picks up an extra [ㄹ] in speech.

Where 요 Does Not Go

Three places cause trouble.

1. After formal endings. 감사합니다요 and 먹습니다요 sound odd. Use 감사해요 or 감사합니다.
2. After the polite ending that already has 요. 먹어요요 is wrong, because 어요 already holds one 요.
3. In formal writing. Essays, reports and news use plain endings (먹는다) or formal endings (먹습니다), not 요.

Speech and Writing

The 요 polite particle belongs mainly to speech and informal writing. Messages to colleagues and letters to friends use it often. Formal documents avoid it. In speech, intonation matters as much as the particle, and the lesson on Korean question intonation shows how a rising tone turns 어디요 into a question. Knowing the uses is half the job; the other half is spotting the mistakes covered next.

What Mistakes Do Learners Make with 요?

Learners usually make five predictable mistakes with 요. Each one below follows the pattern "learners often assume X; actually Y, because Z".

1. "요 means 'please'." Learners often translate 커피요 as only "please". Actually 요 only adds politeness, and "please" comes from context: 커피요 can mean "coffee, please" or "coffee?" depending on tone. 주세요 is the word that means "please give".
2. Adding 요 to formal endings. Learners often say 감사합니다요 to sound extra polite. Actually 감사합니다 is already formal and respectful, so the extra 요 sounds odd. Choose either 감사해요 or 감사합니다.
3. Adding 이 after a vowel. Learners often write 커피이요 or 저이요 by analogy with 김밥이요. Actually 이 is added only after a consonant, so the forms are 커피요 and 저요, because a noun that ends in a vowel needs no extra syllable.
4. Leaving a space. Learners often write 천천히 요. Actually 요 attaches to the word before it, so the correct form is 천천히요.
5. Thinking 요 is only for verbs. Learners often believe 요 appears only in 먹어요 and 가요. Actually 요 also attaches to nouns, adverbs, question words and clause endings, which is why 정말요 and 먹고요 work.

A rule of thumb: when in doubt with a stranger, put 요 on a short answer and finish full sentences with 아요/어요. Do not put 요 on anything that ends in -ㅂ니다 or -습니다. The practice set below tests these defaults.

Practice and Answers

These four exercises check the outcomes listed at the top of the lesson. Write or say your answers first, then check them in the answer key.

Exercise 1: Choose the form. Add 요 or 이요.

1. 커피__ (coffee)
2. 김밥__ (kimbap)
3. 저__ (me)
4. 물__ (water)

Exercise 2: Fix the error. Each sentence has one problem with 요.

1. 감사합니다요.
2. 천천히 요.

Exercise 3: Translate. "I'm busy these days, you see." (busy = 바쁘다, these days = 요즘)

Exercise 4: Write your own. A waiter asks 뭐 드릴까요? Answer with one food or drink and the correct form of 요.

Answer Key

• Exercise 1: 1 커피요 (ends in a vowel). 2 김밥이요 (ends in ㅂ) [김바비요]. 3 저요 (ends in a vowel). 4 물이요 (ends in ㄹ) [무리요].
• Exercise 2: 1 감사합니다 or 감사해요. A formal ending does not take 요. 2 천천히요. Remove the space before 요.
• Exercise 3: 요즘 바쁘거든요. (yojeum bappeugeodeunyo) The clause ending -거든 plus 요 gives a reason in a polite tone.
• Exercise 4: One model answer: 비빔밥이요. (bibimbabiyo) = Bibimbap, please. 밥 ends in a consonant, so 이요. Any food or drink is correct if the form of 요 matches the final sound.

If you missed Exercise 1, return to the pattern table and say each noun aloud. If you missed Exercise 2, reread the section on where 요 does not go. The next section points to where to go from here.

Next Lessons and Where to Go from Here

The natural next lesson is combining particles 에는 에서도 에게만, the last lesson in this set, which shows how two particles stack. For amounts and groups, see the 들 plural marker, which adds plural meaning to nouns. If you have not yet read the previous lesson in this set, the 조차 마저 even particles lesson comes first. The whole group of lessons is listed under Korean auxiliary particles.

What this lesson does not cover. This lesson does not cover the full 해요체 conjugation rules, the honorific -(으)시- ending, or the choice among all speech levels. Those topics have their own pages in the speech levels set.

In short, the 요 polite particle adds politeness to a word, phrase or clause ending: 요 after a vowel, 이요 after a consonant, and never after a formal -ㅂ니다 ending.

Frequently Asked Questions

What does 요 mean in Korean? 요 has no meaning of its own. It adds politeness to the word, phrase or ending in front of it. 커피요 is a polite "coffee, please", 어디요 is a polite "where?" and 먹어요 is a polite "eat". Dropping 요 gives the casual form: 커피, 어디, 먹어.

How do I form 요 after a noun? After a noun that ends in a vowel, attach 요 directly: 커피요, 저요. After a noun that ends in a consonant, the usual form adds 이: 김밥이요, 물이요. After an adverb or a connective ending, attach 요 directly: 천천히요, 먹고요, 바쁘거든요.

What is the most common mistake with 요? The most common mistake is adding 요 to a formal ending, as in 감사합니다요 or 먹습니다요. Formal endings are already respectful, so the extra 요 sounds odd. Choose one style: 감사해요 (polite) or 감사합니다 (formal). Never stack both on the same verb.

How is 요 different from -아요/어요 and -ㅂ니다? 요 is a particle that attaches to many kinds of words. -아요/어요 is a verb ending in which the same 요 follows a casual ending (먹어 plus 요 gives 먹어요). -ㅂ니다/습니다 is a separate formal ending that does not take 요. The three give polite, polite and formal tones.

Do I use 요 in speech, writing or both? Mostly in speech and in informal writing such as messages, emails to colleagues and letters to friends. Essays, news and official documents use the plain written style (먹는다) or formal endings (먹습니다) instead. In conversation 요 is the everyday way to be polite without sounding stiff.