Verbseoul.
ㄷ irregular

깨닫다 conjugation (kkaedatda, to apprehend)

To say to apprehend politely in the present tense, use 깨달아요 (ggae-dah-rah-yoh) · kkaedarayo. Below is the full conjugation of 깨닫다 across the three tenses and three everyday speech levels.

Grammar note (ㄷ irregular): ㄷ-irregular verbs end in 다 with a ㄷ final consonant. Before a vowel, the ㄷ changes to ㄹ. So 듣다 (to listen) becomes 들어요 — NOT *듣어요. Before consonants the ㄷ stays: 듣고, 듣지. A few verbs that look like ㄷ-irregulars are actually regular (e.g. 받다, 믿다) — there is no spelling rule; each must be memorised. See all ㄷ-irregular verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
깨달아
ggae-dah-rah
kkaedara
깨달아요
ggae-dah-rah-yoh
kkaedarayo
깨닫습니다
ggae-daht-seum-nee-dah
kkaedatseumnida
Past
깨달았어
ggae-dah-rah-ssuh
kkaedarasseo
깨달았어요
ggae-dah-rah-ssuh-yoh
kkaedarasseoyo
깨달았습니다
ggae-dah-rah-sseum-nee-dah
kkaedarasseumnida
Future
깨달을 거야
ggae-dah-reul guh-yah
kkaedareul geoya
깨달을 거예요
ggae-dah-reul guh-yae-yoh
kkaedareul geoyeyo
깨달을 겁니다
ggae-dah-reul guhm-nee-dah
kkaedareul geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
깨달으세요
ggae-dah-reu-sae-yoh
kkaedareuseyo
Suggestion / Let's Polite (요)
깨달아요
ggae-dah-rah-yoh
kkaedarayo
Question Polite (요)
깨달아요?
ggae-dah-rah-yoh-?
kkaedarayo?
Connective "and" — (고)
깨닫고
ggae-daht-goh
kkaedatgo
Conditional "if" — (면)
깨달으면
ggae-dah-reu-myuhn
kkaedareumyeon
Progressive (고 있어요)
깨닫고 있어요
ggae-daht-goh ee-ssuh-yoh
kkaedatgo isseoyo
Want to (고 싶어요)
깨닫고 싶어요
ggae-daht-goh shee-puh-yoh
kkaedatgo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
깨달을 수 있어요
ggae-dah-reul soo ee-ssuh-yoh
kkaedareul su isseoyo
Because / So (아/어서)
깨달아서
ggae-dah-rah-suh
kkaedaraseo
Noun form — (기)
깨닫기
ggae-daht-gee
kkaedatgi
Noun form — (음)
깨달음
ggae-dah-reum
kkaedareum