50 Essential Korean Idioms for Students

Must-know Korean four-character idioms organized by difficulty level, with meanings and example sentences.

1

Beginner — Elementary Grades 3-4

15 idioms
01
일석이조 (一石二鳥)

Killing two birds with one stone

Example: Exercising while listening to music is killing two birds with one stone.

02
자업자득 (自業自得)

You reap what you sow

Example: Not studying and failing the test is reaping what you sowed.

03
전화위복 (轉禍爲福)

A blessing in disguise

Example: The failure became a blessing in disguise and led to a better path.

04
유비무환 (有備無患)

If you prepare, there is no worry

Example: As the saying goes, I brought an umbrella just in case.

05
다다익선 (多多益善)

The more the better

Example: Friends are the more the merrier.

06
동문서답 (東問西答)

Answering irrelevantly to a question

Example: I asked about homework and they talked about weather. Totally off-topic.

07
이심전심 (以心傳心)

Heart-to-heart communication without words

Example: Best friends communicate heart-to-heart without words.

08
일취월장 (日就月將)

Growing day by day and month by month

Example: With steady practice, skills grew remarkably.

09
백문불여일견 (百聞不如一見)

Seeing once is better than hearing a hundred times

Example: Seeing it in person made all the difference.

10
무아지경 (無我之境)

Being so absorbed that you forget yourself

Example: I was so absorbed in the game I lost track of time.

11
고진감래 (苦盡甘來)

After hardship comes sweetness

Example: After all the hard work, good results will come.

12
대기만성 (大器晩成)

A great vessel takes time to complete

Example: It is okay to be slow now. Great things take time.

13
우이독경 (牛耳讀經)

Reading scriptures to a cow. Pointless advice.

Example: No matter how I explain, it falls on deaf ears.

14
사필귀정 (事必歸正)

All things return to what is right

Example: The truth will come out eventually.

15
역지사지 (易地思之)

Think from the other person's perspective

Example: Try to see why your friend is upset from their perspective.

2

Intermediate — Elementary Grades 5-6

20 idioms
01
와신상담 (臥薪嘗膽)

Enduring hardship for future revenge/success

Example: He prepared for a comeback with unwavering determination.

02
새옹지마 (塞翁之馬)

Fortune and misfortune are unpredictable

Example: I failed the exam, but who knows what good may come.

03
사면초가 (四面楚歌)

Surrounded by enemies on all sides

Example: It was a situation where no one was on my side.

04
오리무중 (五里霧中)

Completely lost in fog; clueless

Example: We have no clue who the culprit is.

05
배수진 (背水陣)

Fighting with no retreat; burning bridges

Example: I went all-in on the final exam.

06
환골탈태 (換骨奪胎)

A complete transformation

Example: Everyone was amazed at the complete transformation after the diet.

07
불치하문 (不恥下問)

Not ashamed to ask those below you

Example: Always ask when you do not know, no matter who you ask.

08
동병상련 (同病相憐)

Those with the same illness sympathize with each other

Example: I felt a bond with a friend who had the same worries.

09
각주구검 (刻舟求劍)

Stubbornly clinging to outdated methods

Example: Sticking to old ways in new times is foolish.

10
삼고초려 (三顧草廬)

Visiting someone three times to recruit talent

Example: The CEO recruited the expert after persistent visits.

11
조삼모사 (朝三暮四)

Fooled by superficial differences

Example: It looks like a discount, but it might be the same deal.

12
어부지리 (漁父之利)

A third party profits from others' conflict

Example: Consumers benefited while the two companies competed.

13
군계일학 (群鷄一鶴)

A crane among chickens; standing out

Example: That student really stands out in the class.

14
온고지신 (溫故知新)

Learning new things by reviewing the old

Example: Study history with the spirit of learning from the past.

15
마이동풍 (馬耳東風)

Letting advice go in one ear and out the other

Example: All advice goes in one ear and out the other.

16
호사다마 (好事多魔)

Good things often face obstacles

Example: Problems arose during wedding prep, but good things face obstacles.

17
경거망동 (輕擧妄動)

Acting recklessly without thinking

Example: Don't act recklessly; decide carefully.

18
구사일생 (九死一生)

A narrow escape from death

Example: I barely survived the car accident.

19
금상첨화 (錦上添花)

Adding flowers to brocade; icing on the cake

Example: Getting accepted and earning a scholarship is icing on the cake.

20
형설지공 (螢雪之功)

Studying hard despite difficult circumstances

Example: After studying hard through hardship, I finally passed.

3

Advanced — Middle School

15 idioms
01
타산지석 (他山之石)

Learning from others' mistakes

Example: I used a senior's failure as a lesson.

02
토사구팽 (兔死狗烹)

Discarding someone after they are no longer useful

Example: Companies should not discard employees after using them.

03
명경지수 (明鏡止水)

A clear mirror and still water; a calm mind

Example: I took the test with a calm and clear mind.

04
부화뇌동 (附和雷同)

Blindly following others without your own opinion

Example: Don't just follow the crowd; think for yourself.

05
사상누각 (砂上樓閣)

A castle built on sand; an unstable foundation

Example: Raising grades without fundamentals is building on sand.

06
각골난망 (刻骨難忘)

Gratitude engraved in one's bones; unforgettable kindness

Example: My teacher's kindness is deeply engraved in my heart.

07
지록위마 (指鹿爲馬)

Calling a deer a horse; distorting the truth with power

Example: Distorting facts is like calling a deer a horse.

08
교각살우 (矯角殺牛)

Trying to fix a small flaw and ruining the whole thing

Example: Obsessing over details ruined the whole project.

09
연목구어 (緣木求魚)

Climbing a tree to catch fish; using the wrong approach

Example: Trying to raise grades without studying is futile.

10
결초보은 (結草報恩)

Repaying kindness even after death

Example: I will repay your kindness with all my heart.

11
견물생심 (見物生心)

Desire arises upon seeing something

Example: Going to the mall makes me want to buy everything.

12
복수불반분 (覆水不返盆)

Spilled water cannot be gathered again

Example: Words once spoken cannot be taken back, so be careful.

13
안빈낙도 (安貧樂道)

Finding joy in principles despite poverty

Example: The scholar devoted himself to research, content with simplicity.

14
과유불급 (過猶不及)

Too much is as bad as too little

Example: Even studying should be balanced; too much is counterproductive.

15
과전불납리 (瓜田不納履)

Avoid actions that invite suspicion

Example: Avoid doing things that might be misunderstood.

Study Tips for Idioms

1.

Understanding each Hanja character helps you guess the full meaning.

2.

Group similar idioms together for effective memorization.

3.

Use them in daily life. Try adding one idiom per day to your journal.

4.

Learning with music on ONGO helps you remember longer!

Learn idioms through music!

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