Core Grammar Rule: ~더라 / ~더군(요)
This ending is used to state a fact that the speaker learned for the first time through direct experience or observation in the past. It often carries a nuance of mild surprise or a new realization.
Meaning & Usage
Meaning: It translates to "I saw that...", "I found that...", or "I experienced that...". It's a retrospective ending, meaning you are looking back on a past event you personally witnessed.
When to use: Use it to share your personal observations with someone who was not there with you. It's not used for general facts everyone knows, but for something you specifically noticed. For example, you went to a new cafe and are telling your friend about it: "거기 커피가 맛있더라" (I found that the coffee there was good).
Conjugation Rules
Rule: Simply attach ~더라 or ~더군(요) to the stem of a verb or adjective, regardless of whether it ends in a vowel or a consonant. For nouns, you use ~(이)더라.
Adjective/Verb: 가다 (to go) → 가더라 / 예쁘다 (to be pretty) → 예쁘더라 / 먹다 (to eat) → 먹더라 / 좋다 (to be good) → 좋더라
Noun: 학생 (student) → 학생이더라 / 의사 (doctor) → 의사더라
Verb/Adjective Stem + 더라/더군(요) / Noun + (이)더라
Native Nuance & Mistakes
~더라 is about your own, direct, past experiences, which leads to some common mistakes for learners.
First-Person Subject Only
Context: The experience must be your own. You cannot use ~더라 to report something someone else told you or to state a general, objective fact you didn't witness. It's about your recollection.
Do: 어제 영화를 봤는데 정말 슬프더라. (I watched the movie yesterday, and I found it was really sad.)
Don't: 내 친구가 그 영화를 봤는데 정말 슬프더라. (X) → 내 친구가 그 영화를 봤는데 정말 슬펐대. (O) (My friend watched that movie and said it was really sad.)
Not for Present Feelings or Intentions
Context: Because ~더라 is retrospective (looking back), you cannot use it to describe your own current state of mind, feelings, or intentions. It's for observing external facts or your past internal states.
Do: 어제는 피곤하더라. (I recall that I was tired yesterday.)
Don't: 지금 피곤하더라. (X) → 지금 피곤해. (O) (I'm tired now.)
Do: 어제 가 보니 좋더라. (O) / Don't: 친구가 좋더라. (X)
Common Phrases with ~더라(고요)
The ending ~더라(고요) often pairs with certain adverbs or clauses to add specific nuances like surprise or realization.
Expressing Surprise vs. Expectation
Use 생각보다 (than I thought/expected) before the verb or adjective to emphasize that your observation was different from your expectation.
This is a very natural way to express mild surprise.
Example: 안에 굿즈가 생각보다 예쁘더라고요. (I found that the merchandise inside was prettier than I expected.)
Example: 날씨는 좋았는데 생각보다 바람이 많이 불더라. (The weather was nice, but it was windier than I thought.)
Expressing Realization
The pattern [Clause]~는지 알겠더라 is used when you finally understand something after a direct experience.
It translates to "I could see why/how..." or "I finally understood why/how...".
Example: 네가 왜 그렇게 제주도를 좋아하는지 알겠더라. (I can see why you love Jeju so much.)
생각보다 예쁘더라고요. / 왜 좋아하는지 알겠더라.
Reacting to a ~더라 Story
When someone shares a personal observation using ~더라(고요), you can respond in several ways to show you're engaged in the conversation.
Agree and Share Your Own Experience
A simple way to connect is to agree with 맞아요 (That's right) and then add a related experience of your own.
A: 사람이 정말 많더라고요. (There were so many people.)
B: 맞아요. 저도 일요일에 갔는데 한 시간이나 기다렸어요. (That's right. I went on Sunday and waited for an hour.)
Ask Follow-up Questions
Show your interest by asking for more details about their observation.
A: 흑돼지 전문점에 갔는데 진짜 맛있더라. (I went to a black pork restaurant, and it was seriously delicious.)
B: 거기 유명한 데지? 사람 많았어? (That place is famous, right? Was it crowded?)
Make an Inference
You can also respond by making a guess about the situation based on what they said, often using ~(으)ㄴ/나 보네.
A: 바다가 정말 파랗고 예쁘더라. (The sea was so blue and pretty.)
B: 날씨 좋았나 보네. (The weather must have been good.)
맞아요. / 사람 많았어? / 날씨 좋았나 보네.
Politeness & Formality
The ending ~더라 has several variations that you can use to adjust the level of politeness, making it versatile for different social situations.
Casual Form: ~더라 / ~더군
Context: This is the base form and is considered informal or casual (반말). You should only use it with close friends, family members, or people who are younger than you. It creates a friendly, intimate tone when sharing your experiences.
Example: 친구랑 같이 갔는데 음식이 정말 맛있더라. (I went with a friend, and the food was really delicious.)
Polite Form: ~더라고요 / ~더군요
Context: By adding ~요 to the end, you create the standard polite form (해요체). This is the most common and safest form to use in daily conversations with colleagues, acquaintances, or people older than you. ~더군요 feels slightly more formal and exclamatory than ~더라고요.
Polite: 사람이 많더라고요. / Casual: 사람이 많더라.