Negation in Korean — 안 vs -지 않다 vs 못 (3 Ways to Say "Not")

<h2>The Three Faces of "No" in Korean</h2> <p>In English, we have a fairly simple negation system: "not" or "don't." In Korean, it's a bit richer — there are <strong>three main ways</strong> to say "not," and each carries its own nuance. When I started learning Korean in Seoul, I exclusively used 안 (an) for everything, and my colleagues were constantly correcting me. "No Nicolas, that's 못 (mot), not 안! You can't do it, you're not refusing!"</p> <p>After twelve years in Korea, I can assure you that mastering these three negation forms is a turning point in your learning. Let's dive in.</p> <h2>Negation #1: 안 (an) — "Not" by Choice</h2> <p>The 안 negation is the simplest and most common. You place it <strong>right before the verb</strong>. It expresses a voluntary refusal, a choice not to do something.</p> <h3>Construction</h3> <p><strong>안 + verb</strong></p> <table> <tr><th>Affirmative</th><th>Negative with 안</th><th>Romanization</th><th>Translation</th></tr> <tr><td>먹어요 (meogeoyo)</td><td>안 먹어요</td><td>an meogeoyo</td><td>I don't eat</td></tr> <tr><td>가요 (gayo)</td><td>안 가요</td><td>an gayo</td><td>I don't go</td></tr> <tr><td>봐요 (bwayo)</td><td>안 봐요</td><td>an bwayo</td><td>I don't watch</td></tr> <tr><td>자요 (jayo)</td><td>안 자요</td><td>an jayo</td><td>I don't sleep</td></tr> <tr><td>해요 (haeyo)</td><td>안 해요</td><td>an haeyo</td><td>I don't do</td></tr> </table> <p>A memorable moment: when my Korean in-laws offered me 번데기 (beondegi — silkworm pupae, a popular snack in Korea), I said "안 먹어요" with a big smile. It clearly meant "I choose not to eat that." Polite but firm.</p> <h3>Special Case: 하다 Verbs</h3> <p>For compound verbs with 하다 (hada — to do), you insert 안 <strong>between the noun and 하다</strong>:</p> <table> <tr><th>Verb</th><th>Negation</th><th>Romanization</th><th>Translation</th></tr> <tr><td>공부하다 (gongbuhada)</td><td>공부 안 하다</td><td>gongbu an hada</td><td>Not study</td></tr> <tr><td>운동하다 (undonghada)</td><td>운동 안 하다</td><td>undong an hada</td><td>Not exercise</td></tr> <tr><td>요리하다 (yorihada)</td><td>요리 안 하다</td><td>yori an hada</td><td>Not cook</td></tr> </table> <p>Warning: you do NOT say ❌ 안 공부하다 but ✅ 공부 안 하다. This is a very common beginner mistake.</p> <h2>Negation #2: -지 않다 (-ji anta) — The Formal Negation</h2> <p>The long form -지 않다 attaches <strong>to the end of the verb stem</strong>. The meaning is identical to 안, but the register is slightly more formal or emphatic.</p> <h3>Construction</h3> <p><strong>Verb stem + -지 않다</strong></p> <table> <tr><th>Verb</th><th>Long negation</th><th>Conjugated (polite)</th><th>Translation</th></tr> <tr><td>먹다 (meokda)</td><td>먹지 않다</td><td>먹지 않아요</td><td>I don't eat</td></tr> <tr><td>[가다](/en/dictionary/%EA%B0%80%EB%8B%A4) (gada)</td><td>가지 않다</td><td>가지 않아요</td><td>I don't go</td></tr> <tr><td>좋아하다 (joahada)</td><td>좋아하지 않다</td><td>좋아하지 않아요</td><td>I don't like</td></tr> <tr><td>마시다 (masida)</td><td>마시지 않다</td><td>마시지 않아요</td><td>I don't drink</td></tr> </table> <h3>안 vs -지 않다: What's the Difference?</h3> <p>The meaning is identical, but the usage differs:</p> <table> <tr><th>안 먹어요</th><th>먹지 않아요</th></tr> <tr><td>Everyday conversation</td><td>Writing, formal speech</td></tr> <tr><td>Short and direct</td><td>More emphatic, more "refined"</td></tr> <tr><td>Mainly spoken</td><td>Spoken and written</td></tr> </table> <p>In daily life in Seoul, I use 안 about 80% of the time. The long form -지 않다 comes out when I want to emphasize something or in a professional context. For example, in a meeting: "이 방법은 효율적이지 않아요" (i bangbeob-eun hyoyuljeog-iji anayo — This method is not efficient).</p> <h2>Negation #3: 못 (mot) — "Cannot"</h2> <p>못 expresses <strong>inability</strong> or <strong>impossibility</strong>. It's not a choice — it's a limitation. The construction is identical to 안: place 못 right before the verb.</p> <h3>Construction</h3> <p><strong>못 + verb</strong></p> <table> <tr><th>Affirmative</th><th>With 못</th><th>Romanization</th><th>Translation</th></tr> <tr><td>가요</td><td>못 가요</td><td>mot gayo</td><td>I can't go</td></tr> <tr><td>먹어요</td><td>못 먹어요</td><td>mot meogeoyo</td><td>I can't eat</td></tr> <tr><td>자요</td><td>못 자요</td><td>mot jayo</td><td>I can't sleep</td></tr> <tr><td>읽어요</td><td>못 읽어요</td><td>mot ilgeoyo</td><td>I can't read</td></tr> </table> <p>The nuance is crucial. Let's compare:</p> <table> <tr><th>Sentence</th><th>Meaning</th></tr> <tr><td>안 먹어요 (an meogeoyo)</td><td>I don't eat (I don't want to / I choose not to)</td></tr> <tr><td>못 먹어요 (mot meogeoyo)</td><td>I can't eat (allergy, no time, etc.)</td></tr> <tr><td>먹지 않아요 (meokji anayo)</td><td>I don't eat (more formal tone)</td></tr> </table> <p>Anecdote: one day at a restaurant with Korean friends, the server suggested a very spicy dish. My friend said "못 먹어요" (I can't eat that — too spicy for him). I said "안 먹어요" (I choose not to eat it — I don't like chili). Two different negations, two completely different reasons.</p> <h3>못 with 하다 Verbs</h3> <p>Just like with 안, you separate the noun from 하다:</p> <table> <tr><th>Verb</th><th>Negation</th><th>Translation</th></tr> <tr><td>운동하다</td><td>운동 못 하다</td><td>Can't exercise</td></tr> <tr><td>공부하다</td><td>공부 못 하다</td><td>Can't study</td></tr> <tr><td>요리하다</td><td>요리 못 하다</td><td>Can't cook</td></tr> </table> <h2>Long Form of 못: -지 못하다</h2> <p>Just like -지 않다, there's a long form for inability:</p> <p><strong>Verb stem + -지 못하다</strong></p> <ul> <li>가지 못해요 (gaji motaeyo) — I can't go</li> <li>먹지 못해요 (meokji motaeyo) — I can't eat</li> <li>잠을 자지 못해요 (jameul jaji motaeyo) — I can't sleep</li> </ul> <p>This form is more formal and often used in writing.</p> <h2>Summary: When to Use What?</h2> <table> <tr><th>Situation</th><th>Negation</th><th>Example</th></tr> <tr><td>Refusal / personal choice</td><td>안 / -지 않다</td><td>안 먹어요 — I don't eat (I don't want to)</td></tr> <tr><td>Physical inability</td><td>못 / -지 못하다</td><td>못 먹어요 — I can't eat (allergy)</td></tr> <tr><td>Lack of skill</td><td>못</td><td>한국어를 못 해요 — I can't speak Korean</td></tr> <tr><td>External circumstances</td><td>못</td><td>비가 와서 못 가요 — It's raining so I can't go</td></tr> <tr><td>Prohibition</td><td>-(으)면 안 되다</td><td>여기서 담배를 피우면 안 돼요 — Smoking is not allowed here</td></tr> </table> <h2>My Field Advice</h2> <p>If you're a beginner, start by mastering 안 for refusals and 못 for inability. The long forms will come naturally when you're comfortable with formal Korean. Don't stress — even after twelve years in Seoul, I still sometimes hesitate for a split second between 안 and 못 in ambiguous situations.</p> <p>To deepen these nuances with interactive exercises and realistic scenarios, <a href="/en/signup">join Seonsaengnim</a> and practice Korean negation in real-life dialogues.</p>