Mastering Korean 'ㅂ' Irregular Verbs / ㅂ Irregular Verb Change : Weather & Feelings | Korean Learning Materials

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The Shape-Shifters: Korean 'ㅂ' Irregular Verbs (ㅂ 불규칙)

Are you looking for the best Korean learning materials to master grammar? Welcome to Soona Study Lab's Grammar Masterclass! Today, we are tackling one of the most frequently used yet confusing grammar points for Korean learners:

The 'ㅂ' Irregular Verbs (ㅂ 불규칙 동사).

In Korean, if you want to talk about the weather (cold, hot), your feelings, or the taste of food (spicy, bland), you have to use verbs and adjectives that end with the consonant 'ㅂ' (like 춥다, 덥다, 맵다, 무섭다).

But here is the tricky part: when these words meet a grammar patterns start with vowel like '-아/어요', they completely change their shape! The 'ㅂ' drops out and magically transforms into '우' or '오'.

Don't worry! Because these words are mostly related to daily weather and emotions, you will use them all the time. Once you understand this simple rule, you will sound much more natural. We'll also cover the "fake irregulars" (the exceptions) that you must memorize.

Click the play buttons in the interactive module below to listen to the native pronunciation and practice reading out loud! 

(The full text and discussion questions are provided at the bottom of the page.)

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Practice Makes Perfect

Memorizing the rule of the 'ㅂ' irregular verb is just the first step. To truly speak Korean with confidence, you need to practice saying words like "추워요" and "어려워요" out loud until they become muscle memory. Stop calculating the grammar in your head and start speaking!

If you found this grammar breakdown helpful and want to practice building complex sentences in real-time, join my 1:1 conversation classes. Let's conquer your Korean goals together!

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Full Grammar Breakdown & Discussion (Free Study Materials)

The Rule: ㅂ changes to 우 (or 오)

If a verb or adjective stem ends with the consonant 'ㅂ', and the following grammar pattern starts with a vowel (like -아/어요 or -(으)면), the 'ㅂ' drops and transforms into '우'. (Note: Only 돕다 and 곱다 change to '오' instead of '우'.)

[Dictionary Form -> Meaning -> Conjugation]

1. 춥다 -> To be cold -> 추 + 우 + 어요 = 추워요

2. 덥다 -> To be hot -> 더 + 우 + 어요 = 더워요

3. 어렵다 -> To be difficult -> 어려 + 우 + 어요 = 어려워요

4. 맵다 -> To be spicy -> 매 + 우 + 어요 = 매워요

5. 돕다 (Exception) -> To help -> 도 + 오 + 아요 = 도와요

   
   

10 Sentences Practice (Present & Past Tense)

오늘 날씨가 너무 추워요. (춥다 - Present)

[O-neul nal-ssi-ga neo-mu chu-wo-yo.]

The weather is too cold today.

작년 여름은 정말 더웠어요. (덥다 - Past)

[Jak-nyeon yeo-reu-meun jeong-mal deo-wo-sseo-yo.]

Last summer was really hot.

한국어 문법이 조금 어려워요. (어렵다 - Present)

[Han-gu-geo mun-bbeo-bi jo-geum eo-ryeo-wo-yo.]

Korean grammar is a bit difficult.

어제 시험은 아주 쉬웠어요. (쉽다 - Past)

[Eo-je si-heo-meun a-ju swi-wo-sseo-yo.]

Yesterday's exam was very easy.

이 떡볶이는 너무 매워요. (맵다 - Present)

[I tteok-ppo-kki-neun neo-mu mae-wo-yo.]

This tteokbokki is too spicy.

그 가방이 너무 무거웠어요. (무겁다 - Past)

[Geu ga-bang-i neo-mu mu-geo-wo-sseo-yo.]

That bag was too heavy.

이 노트북은 아주 가벼워요. (가볍다 - Present)

[I no-teu-bu-geun a-ju ga-byeo-wo-yo.]

This laptop is very light.

제주도의 바다가 정말 아름다웠어요. (아름답다 - Past)

[Je-ju-do-e ba-da-ga jeong-mal a-reum-da-wo-sseo-yo.]

The sea in Jeju Island was really beautiful.

강아지가 정말 귀여워요. (귀엽다 - Present)

[Gang-a-ji-ga jeong-mal gwi-yeo-wo-yo.]

The puppy is really cute.

제가 친구의 숙제를 도왔어요. (돕다 - Past)

[Je-ga chin-gu-e suk-je-reul do-wa-sseo-yo.]

I helped with my friend's homework.

Regular Exceptions (Do not drop ㅂ)

[Dictionary Form -> Meaning -> Conjugation]

1. 입다 -> To wear -> 입 + 어요 = 입어요

2. 잡다 -> To catch -> 잡 + 아요 = 잡아요

3. 접다 -> To fold -> 접 + 어요 = 접어요

4. 좁다 -> To be narrow -> 좁 + 아요 = 좁아요

5. 씹다 -> To chew -> 씹 + 어요 = 씹어요

   
   

내일은 따뜻한 옷을 입어요.

[Nae-i-reun tta-tteu-tan o-seul i-beo-yo.]

Wear warm clothes tomorrow.

경찰이 도둑을 잡았어요.

[Gyeong-cha-ri do-du-geul ja-ba-sseo-yo.]

The police caught the thief.

이 방은 너무 좁아요.

[I bang-eun neo-mu jo-ba-yo.]

This room is too narrow.

종이를 반으로 접었어요.

[Jong-i-reul ba-neu-ro jeo-beo-sseo-yo.]

I folded the paper in half.

음식을 천천히 씹어요.

[Eum-si-geul cheon-cheon-hi ssi-beo-yo.]

Chew your food slowly.

Free Talking & Discussion Questions

여러분의 나라는 지금 날씨가 추워요, 아니면 더워요?

[Yeo-reo-bu-ne na-ra-neun ji-geum nal-ssi-ga chu-wo-yo, a-ni-myeon deo-wo-yo?]

Is the weather cold or hot in your country right now?

한국어 문법 중에서 무엇이 가장 어려워요?

[Han-gu-geo mun-bbeop jung-e-seo mu-eo-si ga-jang eo-ryeo-wo-yo?]

What is the most difficult thing among Korean grammar?

평소에 매운 음식을 잘 먹나요?

[Pyeong-so-e mae-un eum-si-geul jal meong-na-yo?]

Do you usually eat spicy food well?

무서운 영화를 보는 것을 좋아하세요?

[Mu-seo-un yeong-hwa-reul bo-neun geo-seul jo-a-ha-se-yo?]

Do you like watching scary movies?

여행 갈 때 짐이 무거운 편인가요, 가벼운 편인가요?

[Yeo-haeng gal ttae ji-mi mu-geo-un pyeo-nin-ga-yo, ga-byeo-un pyeo-nin-ga-yo?]

When you travel, is your luggage on the heavy side or the light side?

친구가 힘들 때 여러분은 어떻게 도와주나요?

[Chin-gu-ga him-deul ttae yeo-reo-bu-neun eo-tteo-ke do-wa-ju-na-yo?]

How do you help when your friend is having a hard time?

최근에 가 본 곳 중에서 어디가 가장 아름다웠어요?

[Choe-geu-ne ga bon got jung-e-seo eo-di-ga ga-jang a-reum-da-wo-sseo-yo?]

Among the places you visited recently, where was the most beautiful?

음식을 먹을 때 맵거나 짜게 먹나요, 아니면 싱겁게 먹나요?

[Eum-si-geul meo-geul ttae maep-kko jja-ge meong-na-yo, a-ni-myeon sing-geop-ge meong-na-yo?]

When eating food, do you eat it spicy and salty, or bland?

겨울에 외출할 때 옷을 춥게 입어요, 따뜻하게 입어요?

[Gyeo-u-re oe-chul-hal ttae o-seul chup-ge i-beo-yo, tta-tteu-ta-ge i-beo-yo?] When going out in winter, do you wear clothes coldly or warmly?

내일 제가 한국어 연습을 도와줄까요?

[Nae-il je-ga han-gu-geo yeon-seu-beul do-wa-jul-kka-yo?] Shall I help you practice Korean tomorrow?