Verbseoul.
르 irregular (adj)

재빠르다 conjugation (jaeppareuda, to be quick, swift, nimble)

To say to be quick, swift, nimble politely in the present tense, use 재빨라요 (chae-bbahl-rah-yoh) · jaeppalrayo. Below is the full conjugation of 재빠르다 across the three tenses and three everyday speech levels.

Grammar note (르 irregular (adj)): 르-irregular adjectives follow the same pattern as 르-irregular verbs: 르 splits before -어/-아 suffixes. 다르다 (to be different) → 달라요, 빠르다 (to be fast) → 빨라요. Before consonants 르 is unchanged: 다르고, 빠르지. See all 르-irregular verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
재빨라
chae-bbahl-rah
jaeppalra
재빨라요
chae-bbahl-rah-yoh
jaeppalrayo
재빠릅니다
chae-bbah-reum-nee-dah
jaeppareumnida
Past
재빨랐어
chae-bbahl-rah-ssuh
jaeppalrasseo
재빨랐어요
chae-bbahl-rah-ssuh-yoh
jaeppalrasseoyo
재빨랐습니다
chae-bbahl-rah-sseum-nee-dah
jaeppalrasseumnida
Future
재빠를 거야
chae-bbah-reul guh-yah
jaeppareul geoya
재빠를 거예요
chae-bbah-reul guh-yae-yoh
jaeppareul geoyeyo
재빠를 겁니다
chae-bbah-reul guhm-nee-dah
jaeppareul geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
재빠르세요
chae-bbah-reu-sae-yoh
jaeppareuseyo
Suggestion / Let's Polite (요)
재빨라요
chae-bbahl-rah-yoh
jaeppalrayo
Question Polite (요)
재빨라요?
chae-bbahl-rah-yoh-?
jaeppalrayo?
Connective "and" — (고)
재빠르고
chae-bbah-reu-goh
jaeppareugo
Conditional "if" — (면)
재빠르면
chae-bbah-reu-myuhn
jaeppareumyeon
Progressive (고 있어요)
재빠르고 있어요
chae-bbah-reu-goh ee-ssuh-yoh
jaeppareugo isseoyo
Want to (고 싶어요)
재빠르고 싶어요
chae-bbah-reu-goh shee-puh-yoh
jaeppareugo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
재빠를 수 있어요
chae-bbah-reul soo ee-ssuh-yoh
jaeppareul su isseoyo
Because / So (아/어서)
재빨라서
chae-bbahl-rah-suh
jaeppalraseo
Noun form — (기)
재빠르기
chae-bbah-reu-gee
jaeppareugi
Noun form — (음)
재빠름
chae-bbah-reum
jaeppareum