How to Conjugate 낫다 (to be better / to recover): ㅅ-irregular Pattern

ㅅ irregular: ㅅ drops before vowels. 낫 + 아요 → 나아요. Two meanings: 'to be better than' and 'to heal.'

The Rule

ㅅ irregular: ㅅ drops before vowels. 낫 + 아요 → 나아요. Two meanings: 'to be better than' and 'to heal.' 낫다 follows the ㅅ-irregular irregular pattern. This means the verb stem changes when certain endings are added. Don't worry — once you learn this pattern, it applies to many other verbs too.

Why English Speakers Get It Wrong

English verb conjugation is relatively simple — "I eat, he eats, I ate." Korean is more complex because the verb ending changes based on politeness level, tense, AND the verb stem's final vowel or consonant. The ㅅ-irregular pattern is especially tricky because the stem itself changes. English irregular verbs (go→went) change unpredictably, but Korean irregular verbs follow learnable PATTERNS. Once you know the ㅅ-irregular rule, you can predict how all ㅅ-irregular verbs behave.

How It Works

Stem: 낫 Polite present (해요체): 나아요 Polite past: 나았어요 Polite future: 나을 거예요 Formal (합쇼체): 낫습니다 Negative: 안 나아요 Notice how the stem "낫" changes in some forms. This is the ㅅ-irregular pattern in action.

Real Examples

• 나아요 (naayo) — "be better / to recover (polite present)" • 나았어요 (naateoyo) — "be better / to recover (past)" • 나을 거예요 (naeur geoyeyo) — "will be better / to recover (future)" • 낫습니다 (natseupnida) — "be better / to recover (formal)" • 안 나아요 (an naayo) — "don't be better / to recover"

Common Mistakes

❌ 낫아요 (natayo) ✅ 나아요 (naayo) → ㅅ drops: 낫 + 아요 → 나아요. ❌ Using the casual form (낫어/아) in formal situations ✅ Use 낫습니다 when speaking to elders, at work, or in official settings → Mixing up politeness levels is one of the most noticeable mistakes foreigners make in Korean.

Quick Tip

Start by mastering the 해요체 (polite) form: 나아요. This is the form you'll use 90% of the time in daily life. Once it's automatic, add the past (나았어요) and future (나을 거예요) to your toolkit. For ㅅ-irregular verbs, make a list of 5 common ones and practice all their forms. The pattern will click after repetition.

낫다: 나아요 (present) / 나았어요 (past) / 나을 거예요 (future)

Examples

나아요 — naayo — be better / to recover (polite)

나았어요 — naateoyo — be better / to recover (past)

나을 거예요 — naeur geoyeyo — will be better / to recover

낫습니다 — natseupnida — be better / to recover (formal)

안 나아요 — an naayo — don't be better / to recover