Verbseoul.
하다 verb

설명하다 conjugation (seolmyeonghada, to explain)

To say to explain politely in the present tense, use 설명해요 (suhl-myuhng-hae-yoh) · seolmyeonghaeyo. Below is the full conjugation of 설명하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb): 하다 verbs are formed with a Sino-Korean noun + 하다 (e.g. 공부하다 = study + do). 하다 conjugates irregularly: the ㅏ in 하 contracts with the -아/-어 suffix to give 해 (not *하어). Present polite: 해요; past polite: 했어요. The formal ending is 합니다 (not *하습니다). Most noun+하다 compounds follow this pattern uniformly. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
설명해
suhl-myuhng-hae
seolmyeonghae
설명해요
suhl-myuhng-hae-yoh
seolmyeonghaeyo
설명합니다
suhl-myuhng-hahm-nee-dah
seolmyeonghamnida
Past
설명했어
suhl-myuhng-hae-ssuh
seolmyeonghaesseo
설명했어요
suhl-myuhng-hae-ssuh-yoh
seolmyeonghaesseoyo
설명했습니다
suhl-myuhng-hae-sseum-nee-dah
seolmyeonghaesseumnida
Future
설명할 거야
suhl-myuhng-hahl guh-yah
seolmyeonghal geoya
설명할 거예요
suhl-myuhng-hahl guh-yae-yoh
seolmyeonghal geoyeyo
설명할 겁니다
suhl-myuhng-hahl guhm-nee-dah
seolmyeonghal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
설명하세요
suhl-myuhng-hah-sae-yoh
seolmyeonghaseyo
Suggestion / Let's Polite (요)
설명해요
suhl-myuhng-hae-yoh
seolmyeonghaeyo
Question Polite (요)
설명해요?
suhl-myuhng-hae-yoh-?
seolmyeonghaeyo?
Connective "and" — (고)
설명하고
suhl-myuhng-hah-goh
seolmyeonghago
Conditional "if" — (면)
설명하면
suhl-myuhng-hah-myuhn
seolmyeonghamyeon
Progressive (고 있어요)
설명하고 있어요
suhl-myuhng-hah-goh ee-ssuh-yoh
seolmyeonghago isseoyo
Want to (고 싶어요)
설명하고 싶어요
suhl-myuhng-hah-goh shee-puh-yoh
seolmyeonghago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
설명할 수 있어요
suhl-myuhng-hahl soo ee-ssuh-yoh
seolmyeonghal su isseoyo
Because / So (아/어서)
설명해서
suhl-myuhng-hae-suh
seolmyeonghaeseo
Noun form — (기)
설명하기
suhl-myuhng-hah-gee
seolmyeonghagi
Noun form — (음)
설명함
suhl-myuhng-hahm
seolmyeongham