A2 noun 2 Min. Lesezeit

으니까

It is a Korean grammar ending used to explain a reason or cause for a suggestion or command.

Practice it

Explanation at your level:

You use -으니까 to say 'because'. If you want to say 'Because it is hot, drink water,' you say '더우니까 물 마셔요.' It helps you explain your ideas to friends simply.

At this level, you learn that -으니까 is perfect for suggestions. Use it when you say 'Let's do this' or 'Please do that.' It makes your Korean sound much more like a local speaker.

Intermediate learners should note the difference between -어서/아서 and -으니까. While the former is for general causes, -으니까 is specifically for your own logic leading to a command or suggestion.

Upper-intermediate speakers use this to show nuance. It emphasizes that the reason is known to the listener or is the speaker's personal justification for a specific directive.

In advanced contexts, -으니까 can be used to set a scene or establish a premise in a persuasive argument. It functions as a logical bridge in debates or complex negotiations.

Mastery involves understanding the subtle shift from objective causality to subjective intent. It is a vital tool for controlling the flow of conversation and influencing the listener's behavior through logical framing.

Wort in 30 Sekunden

  • Used for subjective reasons.
  • Pairs with suggestions/commands.
  • Consonant stem: -으니까.
  • Vowel stem: -니까.

Hey there! Think of -으니까 as your go-to tool for explaining the 'why' behind your requests. In Korean, you don't just say 'because' anywhere; you use this specific ending when you are about to give an order, make a suggestion, or propose an idea.

It is super useful because it connects your reason directly to your next step. For example, if you say 'It's raining, so let's take an umbrella,' the 'so' part is exactly where -으니까 shines. It feels very natural and keeps your sentences flowing smoothly when you are interacting with friends or colleagues.

The suffix -으니까 evolved from the Middle Korean particle -으며 and the causal -니. Historically, it served to link clauses where the first clause provided a necessary condition for the second.

Over centuries, the language shifted to distinguish between objective reasons (like -어서/아서) and subjective reasons that lead to specific actions. This evolution allowed speakers to be more precise about their intentions. It is a classic example of how Korean grammar evolved to prioritize the relationship between the speaker's logic and their social interaction.

You use -으니까 primarily with verbs and adjectives. If the stem ends in a consonant, use -으니까; if it ends in a vowel, use -니까.

It is widely used in daily conversation, especially when you are being assertive or persuasive. It is not usually used in very formal written reports where objective, neutral causal markers are preferred. Stick to using it when you are talking to people face-to-face or writing casual messages.

While it is a grammar piece, it appears in common phrases: 1. 알았으니까 (I got it, so stop talking). 2. 했으니까 (Since I did it, now it's your turn). 3. 먹었으니까 (Since we ate, let's go). 4. 시간 없으니까 (Since we have no time, hurry up). 5. 봤으니까 (Since I saw it, I know the truth).

The pronunciation is straightforward: eu-ni-kka. Ensure the 'kk' sound is tense and sharp. It does not have plurals or articles, as it is a suffix.

The key rule is the imperative/propositive constraint. You generally avoid using it with simple past tense endings in the first clause unless you are emphasizing a completed state. It rhymes loosely with -으니까 (self-rhyming) and matches the cadence of other conjunctive endings like -니까.

Fun Fact

It is one of the most frequently used endings in spoken Korean.

Pronunciation Guide

UK /eu-ni-kka/

Crisp 'eu' sound, followed by nasal 'ni' and tense 'kka'.

US /eu-ni-kka/

Similar to UK, focus on the glottal stop in the double 'k'.

Common Errors

  • Softening the 'kk'
  • Misplacing the vowel length
  • Incorrect liaison

Rhymes With

니까 있으니까 없으니까 했으니까 봤으니까

Difficulty Rating

Lesen 2/5

Easy to read

Writing 2/5

Easy to write

Speaking 2/5

Easy to speak

Hören 2/5

Easy to listen

What to Learn Next

Prerequisites

배고프다 가다 먹다

Learn Next

-어서/아서 -기 때문에

Fortgeschritten

-느라고 -길래

Grammar to Know

Imperative

가세요

Propositive

가요

Causal

때문에

Examples by Level

1

배고프니까 먹자.

Hungry-because let's eat.

Propositive

2

추우니까 문 닫아요.

Cold-because door close.

Imperative

3

바쁘니까 나중에 봐요.

Busy-because later see.

Polite suggestion

4

비싸니까 사지 마요.

Expensive-because buy don't.

Negative command

5

졸리니까 자요.

Sleepy-because sleep.

Simple statement

6

좋으니까 이거 해요.

Good-because this do.

Suggestion

7

힘드니까 쉬어요.

Hard-because rest.

Advice

8

재미있으니까 봐요.

Fun-because watch.

Recommendation

1

8 examples

1

8 examples

1

8 examples

1

8 examples

1

8 examples

Häufige Kollokationen

배고프니까
바쁘니까
시간 없으니까
좋으니까
힘드니까
다 했으니까
봤으니까
비싸니까
재미있으니까
알았으니까

Idioms & Expressions

"알았으니까 그만해"

I understand, so stop it

알았으니까 그만해, 짜증 나.

casual

"했으니까 됐어"

I did it, so it's fine

숙제 다 했으니까 됐어.

neutral

"없으니까 사야 해"

It's missing, so we must buy it

우유 없으니까 사야 해.

neutral

"봤으니까 알겠지"

Since you saw it, you know

현장 봤으니까 알겠지?

neutral

"먹었으니까 가자"

We ate, so let's go

다 먹었으니까 가자.

casual

"바쁘니까 나중에"

I'm busy, so let's do it later

지금 바쁘니까 나중에 연락해.

neutral

Easily Confused

으니까 vs -어서/아서

Both mean 'because'

-어서 is objective/natural cause; -으니까 is subjective/intent.

배가 아파서(fact) vs 배가 아프니까(intent) 쉬자.

으니까 vs -기 때문에

Both mean 'because'

-기 때문에 is for formal/objective reasons.

비 때문에 취소됨 vs 비 오니까 가지 마.

으니까 vs -느라고

Both indicate cause

-느라고 is for negative results.

공부하느라고 못 잤어.

으니까 vs -니까

It is the same word

None, just a shortcut.

가니까/가니까.

Sentence Patterns

A1

Adj + -으니까 + Command

추우니까 문 닫아.

A2

Verb + -으니까 + Suggestion

먹었으니까 가자.

B1

Noun + -이니까 + Result

학생이니까 공부해야 해.

B2

Past Verb + -으니까 + Action

봤으니까 말해줘.

A2

Adj + -으니까 + Opinion

좋으니까 추천해요.

Wortfamilie

Verwandt

-니까 shortened form

How to Use It

frequency

10/10

Formality Scale

Polite/Casual Neutral Informal

Häufige Fehler

Using with past tense -았/었- in the first clause for simple facts → Use for completed states leading to a result
It's often redundant.
Confusing with -어서/아서 → Use -으니까 for commands/suggestions
They aren't always interchangeable.
Attaching to nouns directly → Use -이니까
Nouns need the copula.
Overusing in formal writing → Use -기 때문에
It's too conversational.
Mispronouncing the final 'kka' → Tense 'k' sound
It changes the meaning.

Tips

💡

Memory Palace

Place the suffix on your 'Reason' door.

💡

Native Habit

Use it to start your sentences.

🌍

Politeness

Always pair with polite endings.

💡

Shortcut

Think: Reason -> Command.

💡

Sharp K

Make the K sound pop.

💡

Noun trap

Nouns need -이니까.

💡

K-Drama staple

You hear it every 5 minutes.

💡

Flashcards

Pair with verbs.

💡

Speaking

Record yourself.

💡

Writing

Use in diaries.

Memorize It

Mnemonic

Think of 'eu' (you) 'ni' (need) 'kka' (car) -> You need a car, so let's go!

Visual Association

A road sign pointing to a destination.

Word Web

Reason Suggestion Command Causality

Herausforderung

Write 5 sentences using -으니까 for suggestions.

Wortherkunft

Korean

Original meaning: Causal linkage

Kultureller Kontext

None, universally accepted.

Directly maps to the logical 'since' or 'because' in English.

Used in almost every K-drama interaction involving a decision.

Practice in Real Life

Real-World Contexts

At home

  • 피곤하니까 자자
  • 배고프니까 먹자
  • 추우니까 닫아

At work

  • 바쁘니까 나중에
  • 중요하니까 확인해
  • 끝났으니까 가자

Travel

  • 멀으니까 타자
  • 비싸니까 안 사
  • 좋으니까 가보자

School

  • 어려우니까 도와줘
  • 중요하니까 적어
  • 끝났으니까 나가자

Conversation Starters

"배고프니까 뭐 먹을까?"

"날씨가 좋으니까 어디 갈까?"

"바쁘니까 나중에 할까?"

"다 했으니까 이제 뭐 할까?"

"힘드니까 좀 쉴까?"

Journal Prompts

Write about why you are studying Korean using -으니까.

Describe your daily routine using -으니까.

List 3 things you want to do and why.

Explain a recent decision you made.

Häufig gestellte Fragen

8 Fragen

Yes, but it's more common in dialogue.

Yes, -으니까 is for subjective intent.

Use -이니까.

It's neutral-polite.

It can be used with past tense.

No, it's very intuitive.

Better to use -기 때문에.

Use -니까.

Teste dich selbst

fill blank A1

배가 ___ 먹자.

Richtig! Nicht ganz. Richtige Antwort: 고프니까

It's a suggestion.

multiple choice A2

Which is correct?

Richtig! Nicht ganz. Richtige Antwort: 비 오니까 우산 써.

Correct usage with command.

true false B1

Can -으니까 be used for commands?

Richtig! Nicht ganz. Richtige Antwort: Richtig

Yes, it's perfect for that.

match pairs B1

Word

Bedeutung

All matched!

Simple translation match.

sentence order B2

Tippe auf die Wörter unten, um den Satz zu bilden
Richtig! Nicht ganz. Richtige Antwort:

Correct order: 피곤하니까 우리 가자.

Ergebnis: /5

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