Verbseoul.
ㄹ stem (adj)

둥글다 conjugation (dunggeulda, to be round, circular)

To say to be round, circular politely in the present tense, use 둥글어요 (doong-geu-ruh-yoh) · dunggeureoyo. Below is the full conjugation of 둥글다 across the three tenses and three everyday speech levels.

Grammar note (ㄹ stem (adj)): ㄹ-stem adjectives follow the same pattern as ㄹ-stem verbs: the ㄹ is kept before vowel suffixes and drops before ㄴ, ㅂ, and 습니다. 길다 (to be long) → 길어요, 긴, 깁니다. 멀다 (to be far) → 멀어요, 먼, 멉니다. See all ㄹ-stem verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
둥글어
doong-geu-ruh
dunggeureo
둥글어요
doong-geu-ruh-yoh
dunggeureoyo
둥급니다
doong-geum-nee-dah
dunggeumnida
Past
둥글었어
doong-geu-ruh-ssuh
dunggeureosseo
둥글었어요
doong-geu-ruh-ssuh-yoh
dunggeureosseoyo
둥글었습니다
doong-geu-ruh-sseum-nee-dah
dunggeureosseumnida
Future
둥글 거야
doong-geul guh-yah
dunggeul geoya
둥글 거예요
doong-geul guh-yae-yoh
dunggeul geoyeyo
둥글 겁니다
doong-geul guhm-nee-dah
dunggeul geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
둥그세요
doong-geu-sae-yoh
dunggeuseyo
Suggestion / Let's Polite (요)
둥글어요
doong-geu-ruh-yoh
dunggeureoyo
Question Polite (요)
둥글어요?
doong-geu-ruh-yoh-?
dunggeureoyo?
Connective "and" — (고)
둥글고
doong-geul-goh
dunggeulgo
Conditional "if" — (면)
둥글면
doong-geul-myuhn
dunggeulmyeon
Progressive (고 있어요)
둥글고 있어요
doong-geul-goh ee-ssuh-yoh
dunggeulgo isseoyo
Want to (고 싶어요)
둥글고 싶어요
doong-geul-goh shee-puh-yoh
dunggeulgo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
둥글 수 있어요
doong-geul soo ee-ssuh-yoh
dunggeul su isseoyo
Because / So (아/어서)
둥글어서
doong-geu-ruh-suh
dunggeureoseo
Noun form — (기)
둥글기
doong-geul-gee
dunggeulgi
Noun form — (음)
둥긂
doong-geum
dunggeum