Verbseoul.
하다 verb (adj)

서늘하다 conjugation (seoneulhada, to be cool, to be rather chilly)

To say to be cool, to be rather chilly politely in the present tense, use 서늘해요 (suh-neul-hae-yoh) · seoneulhaeyo. Below is the full conjugation of 서늘하다 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
서늘해
suh-neul-hae
seoneulhae
서늘해요
suh-neul-hae-yoh
seoneulhaeyo
서늘합니다
suh-neul-hahm-nee-dah
seoneulhamnida
Past
서늘했어
suh-neul-hae-ssuh
seoneulhaesseo
서늘했어요
suh-neul-hae-ssuh-yoh
seoneulhaesseoyo
서늘했습니다
suh-neul-hae-sseum-nee-dah
seoneulhaesseumnida
Future
서늘할 거야
suh-neul-hahl guh-yah
seoneulhal geoya
서늘할 거예요
suh-neul-hahl guh-yae-yoh
seoneulhal geoyeyo
서늘할 겁니다
suh-neul-hahl guhm-nee-dah
seoneulhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
서늘하세요
suh-neul-hah-sae-yoh
seoneulhaseyo
Suggestion / Let's Polite (요)
서늘해요
suh-neul-hae-yoh
seoneulhaeyo
Question Polite (요)
서늘해요?
suh-neul-hae-yoh-?
seoneulhaeyo?
Connective "and" — (고)
서늘하고
suh-neul-hah-goh
seoneulhago
Conditional "if" — (면)
서늘하면
suh-neul-hah-myuhn
seoneulhamyeon
Progressive (고 있어요)
서늘하고 있어요
suh-neul-hah-goh ee-ssuh-yoh
seoneulhago isseoyo
Want to (고 싶어요)
서늘하고 싶어요
suh-neul-hah-goh shee-puh-yoh
seoneulhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
서늘할 수 있어요
suh-neul-hahl soo ee-ssuh-yoh
seoneulhal su isseoyo
Because / So (아/어서)
서늘해서
suh-neul-hae-suh
seoneulhaeseo
Noun form — (기)
서늘하기
suh-neul-hah-gee
seoneulhagi
Noun form — (음)
서늘함
suh-neul-hahm
seoneulham