Korean Verb Conjugation Made Simple: Present, Past & Future Tenses

Korean verb conjugation is simpler than you think — once you understand the system. Unlike European languages where verbs change based on who is speaking, Korean verbs change based on formality level and tense. There is no conjugation by person (I, you, he/she), which actually makes the core system more straightforward than French or Spanish.

This guide breaks down Korean verb conjugation into clear, actionable patterns you can start using today.

How Korean Verbs Work

Every Korean verb in its dictionary form ends in -da. For example: hada (to do), gada (to go), meokda (to eat), boda (to see). To conjugate, you remove the -da and add endings based on tense and formality.

The three things that change a Korean verb:

1. Tense — present, past, or future
2. Formality level — casual, polite, or formal (see our Korean honorifics guide)
3. Sentence type — statement, question, suggestion, or command

What does NOT change: Unlike English, French, or German, the verb form is the same regardless of the subject. "I go," "you go," "he goes" all use the same conjugated form.

The Three Formality Levels

Korean has three main speech levels that affect verb endings. This is covered in detail in our speech levels guide, but here is a quick summary:

Casual (banmal): Used with close friends, younger people, or children. Ending: -a/eo Polite (haeyo-che): The most useful level for learners. Used in everyday conversation. Ending: -a/eoyo Formal (hapsyo-che): Used in business, news, military, and formal presentations. Ending: -(seu)mnida

Start with polite form. It is appropriate in 90% of situations and is what most textbooks teach first.

Present Tense Conjugation

The present tense in Korean is formed by removing -da from the dictionary form and adding the appropriate ending.

Polite present tense rules:

• If the last vowel of the stem is a or o: add -ayo
• If the last vowel is anything else: add -eoyo
• If the verb ends in ha: it becomes haeyo

Examples:

• gada (to go) stem: ga (last vowel: a) becomes gayo
• meokda (to eat) stem: meok (last vowel: eo) becomes meogeoyo
• hada (to do) becomes haeyo
• boda (to see) stem: bo (last vowel: o) becomes bwayo (vowel contraction)

Past Tense Conjugation

Past tense follows the same vowel harmony rules but adds -ss before the ending.

Polite past tense:

• a/o stem: add -asseoyo
• other stems: add -eosseoyo
• ha verbs: haesseoyo

Examples:

• gada becomes gasseoyo (went)
• meokda becomes meogeosseoyo (ate)
• hada becomes haesseoyo (did)

Future Tense

Future tense uses -(eu)l geoyeyo for polite form.

Examples:

• gada becomes gal geoyeyo (will go)
• meokda becomes meogeul geoyeyo (will eat)
• hada becomes hal geoyeyo (will do)

The 10 Most Important Korean Verbs

Master these first — they appear in almost every Korean conversation:

1. hada — to do (the most versatile; combines with nouns to create hundreds of verbs)
2. ida — to be (identity: "I am a student")
3. itda — to exist/have ("there is" or "I have")
4. gada — to go
5. oda — to come
6. boda — to see/watch
7. meokda — to eat
8. masida — to drink
9. alda — to know
10. juda — to give

Irregular Verbs

Korean has several classes of irregular verbs where the stem changes during conjugation. The most common irregulars involve stems ending in certain consonants.

The good news: irregulars follow their own consistent patterns. Once you learn the pattern for one irregular type, all verbs of that type follow the same rule.

Practice tip: Do not try to memorize all irregulars at once. Learn them as you encounter them in real Korean content — K-dramas, songs, and conversations will naturally expose you to the most common ones.

Practice Strategy

1. Start with the 10 essential verbs in polite present tense
2. Add past tense once present feels automatic
3. Learn casual form for texting and talking with friends
4. Pick up formal form for watching Korean news and TOPIK preparation
5. Practice with real content — Korean songs use informal, dramas mix all levels

For a complete learning path, see our Korean proficiency roadmap. Master Korean particles and sentence structure alongside verb conjugation for the fastest progress. Use the best language learning apps for daily conjugation drills.