Verbseoul.
하다 verb (adj)

철저하다 conjugation (cheoljeohada, thoroughgoing, thorough, exhaustive)

To say thoroughgoing, thorough, exhaustive politely in the present tense, use 철저해요 (chuhl-chuh-hae-yoh) · cheoljeohaeyo. Below is the full conjugation of 철저하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb (adj)): 하다 adjectives use the same verb 하다 as a suffix to turn descriptive nouns into predicates (행복하다 = to be happy). They conjugate identically to 하다 verbs: the 하 contracts before -아/-어 suffixes to give 해. 행복해요, 행복했어요, 행복합니다. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
철저해
chuhl-chuh-hae
cheoljeohae
철저해요
chuhl-chuh-hae-yoh
cheoljeohaeyo
철저합니다
chuhl-chuh-hahm-nee-dah
cheoljeohamnida
Past
철저했어
chuhl-chuh-hae-ssuh
cheoljeohaesseo
철저했어요
chuhl-chuh-hae-ssuh-yoh
cheoljeohaesseoyo
철저했습니다
chuhl-chuh-hae-sseum-nee-dah
cheoljeohaesseumnida
Future
철저할 거야
chuhl-chuh-hahl guh-yah
cheoljeohal geoya
철저할 거예요
chuhl-chuh-hahl guh-yae-yoh
cheoljeohal geoyeyo
철저할 겁니다
chuhl-chuh-hahl guhm-nee-dah
cheoljeohal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
철저하세요
chuhl-chuh-hah-sae-yoh
cheoljeohaseyo
Suggestion / Let's Polite (요)
철저해요
chuhl-chuh-hae-yoh
cheoljeohaeyo
Question Polite (요)
철저해요?
chuhl-chuh-hae-yoh-?
cheoljeohaeyo?
Connective "and" — (고)
철저하고
chuhl-chuh-hah-goh
cheoljeohago
Conditional "if" — (면)
철저하면
chuhl-chuh-hah-myuhn
cheoljeohamyeon
Progressive (고 있어요)
철저하고 있어요
chuhl-chuh-hah-goh ee-ssuh-yoh
cheoljeohago isseoyo
Want to (고 싶어요)
철저하고 싶어요
chuhl-chuh-hah-goh shee-puh-yoh
cheoljeohago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
철저할 수 있어요
chuhl-chuh-hahl soo ee-ssuh-yoh
cheoljeohal su isseoyo
Because / So (아/어서)
철저해서
chuhl-chuh-hae-suh
cheoljeohaeseo
Noun form — (기)
철저하기
chuhl-chuh-hah-gee
cheoljeohagi
Noun form — (음)
철저함
chuhl-chuh-hahm
cheoljeoham