Four-Character Idioms (사자성어)
Learn common four-character idioms (사자성어) such as 일석이조, 작심삼일 and 유비무환: their Hanja, literal meaning, real meaning and natural use.
Professor Hangyeol · The history, culture and advanced expressions of HangeulWhat you will learn in this lesson
- Understand what 사자성어 are and how their four syllables work
- Learn twelve common idioms with Hanja, literal and real meaning
- Use idioms in sentences with -(이)다, -(이)라고 and as nouns
Welcome back. Four characters, one whole story: that is a 사자성어. In my university days, my friends and I used to compete to see who could use the most idioms in one conversation. Today you may join that old game.
What is a 사자성어?
사자성어 (四字成語) means "a set phrase made of four characters". Each idiom is four Sino-Korean syllables, and each syllable has its own meaning. Many idioms come from old Chinese stories and classical books, and Koreans have used them for centuries.
The structure is usually easy to see once you know the characters. Often the first two syllables form one idea and the last two form another, like a tiny sentence. For example, 일석이조 is 一石 (one stone) + 二鳥 (two birds).
Idioms make your Korean sound educated and precise. They appear constantly in newspaper columns, speeches, essays and the TOPIK test, and some, like 작심삼일, are also very common in casual conversation. In this lesson, the Hanja are given in the notes so you can see the bricks of each idiom.
Idioms about results and plans
- 일석이조 ilseogijo Literally: one stone, two birds. Meaning: getting two benefits from one action. 一石二鳥
- 작심삼일 jaksimsamil Literally: a firm decision (lasts) three days. Meaning: a resolution that is quickly given up. 作心三日 — very common around New Year.
- 유비무환 yubimuhwan Literally: if you are prepared, there is no trouble. Meaning: preparation prevents problems. 有備無患
- 다다익선 dadaikseon Literally: the more, the better. Meaning: more is better. 多多益善
- 대기만성 daegimanseong Literally: a great vessel is completed late. Meaning: great people often succeed later in life. 大器晩成 — encouraging for late bloomers.
- 자업자득 jaeopjadeuk Literally: one’s own deeds, one’s own gain. Meaning: you get what you deserve from your own actions. 自業自得 — usually about bad results. Can sound harsh.
Idioms about communication and behavior
- 동문서답 dongmunseodap Literally: asked about the east, answered about the west. Meaning: giving an answer that has nothing to do with the question. 東問西答
- 이심전심 isimjeonsim Literally: from mind to mind. Meaning: understanding each other without words. 以心傳心
- 금시초문 geumsichomun Literally: hearing it for the first time just now. Meaning: this is the first I have heard of it. 今始初聞
- 우왕좌왕 uwangjwawang Literally: going right, going left. Meaning: rushing around in confusion, not knowing what to do. 右往左往
Idioms about amounts and probability
- 십중팔구 sipjungpalgu Literally: eight or nine out of ten. Meaning: almost certainly, very likely. 十中八九
- 천차만별 cheonchamanbyeol Literally: a thousand differences, ten thousand distinctions. Meaning: very widely varied. 千差萬別 — often about prices or opinions.
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Every January, half of Korea says 작심삼일 with a sigh. I say it too, about my plan to exercise every morning. So when you use this idiom, you will sound very Korean, and perhaps a little honest about yourself.
Idioms behave like nouns. They take 이다, particles and sometimes 하다.
- As a predicate: 그건 일석이조예요. / 일석이조이다.
- Quoting the saying: 유비무환이라고, 미리 준비해 두세요.
- As a modifier with 의: 이심전심의 마음.
- Some idioms take 하다 as verbs: 우왕좌왕하다, 동문서답하다.
- 운동도 하고 출퇴근 시간도 아끼니까 자전거 출근은 일석이조예요. undongdo hago chultoegeun sigando akkinikka jajeongeo chulgeuneun ilseogijoyeyo.You exercise and save commuting time, so cycling to work is two benefits in one.
- 올해도 다이어트 결심이 작심삼일로 끝났어요. olhaedo daieoteu gyeolsimi jaksimsamillo kkeunnasseoyo.This year again, my diet resolution ended after just a few days.
- 유비무환이라고, 여행 가기 전에 보험을 들어 두세요. yubimuhwanirago, yeohaeng gagi jeone boheomeul deureo duseyo.As they say, preparation prevents trouble. Get insurance before you travel.
- 봉사자는 다다익선이니까 친구들도 데려오세요. bongsajaneun dadaikseoninikka chingudeuldo deryeooseyo.For volunteers, the more the better, so bring your friends too.
- 그 소식은 저도 금시초문인데요. geu sosigeun jeodo geumsichomunindeyo.That news is the first I have heard of it, too.
- 불이 꺼지자 사람들이 우왕좌왕했다. buri kkeojija saramdeuri uwangjwawanghaetda.When the lights went out, people rushed around in confusion.
- 질문을 잘못 듣고 동문서답을 했어요. jilmuneul jalmot deutgo dongmunseodabeul haesseoyo.I misheard the question and gave an answer that had nothing to do with it.
- 말하지 않아도 이심전심으로 서로의 마음을 알았다. malhaji anado isimjeonsimeuro seoroui maeumeul aratda.Without saying anything, they understood each other’s hearts.
- 지금 출발하면 십중팔구 늦을 거예요. jigeum chulbalhamyeon sipjungpalgu neujeul geoyeyo.If we leave now, we will almost certainly be late.
Similar but different
- 일석이조 / 다다익선 ilseogijo / dadaikseon two gains from one action / the more the better 일석이조 is about efficiency; 다다익선 is about quantity.
- 유비무환 / 소 잃고 외양간 고친다 yubimuhwan / so ilko oeyanggan gochinda prepare in advance / act too late An idiom and a proverb with opposite lessons.
- 이심전심 / 동문서답 isimjeonsim / dongmunseodap understanding without words / an unrelated answer Perfect communication versus failed communication.
Check quiz
Q1. You give up your plan to study every day after three days. Which idiom fits?
Q2. What does 금시초문 mean?
Q3. Someone asks about your hometown and you talk about the weather. That is:
Q4. Which idiom teaches that preparation prevents problems?
Q5. Choose the correct Hanja for 일석이조.
Q6. Which idiom can sound harsh when said about someone else’s misfortune?
Excellent work. Pick three idioms that describe your own life right now, and write one sentence for each. If one of them is 대기만성, then remember: great vessels take time, and so does great Korean.
Key points
- 사자성어 are four-syllable Sino-Korean idioms, each syllable with its own meaning.
- Learn the Hanja picture first: 一石二鳥 = one stone, two birds.
- Idioms act like nouns: 일석이조예요, 유비무환이라고, 우왕좌왕하다.
- Some idioms, like 자업자득, can sound harsh about other people.
Recommended official free resources
- Standard Korean Dictionary (shows Hanja) — National Institute of Korean Language
- TOPIK II reading practice — TOPIK official site (NIIED)
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