Verbseoul.
하다 verb (adj)

지루하다 conjugation (jiruhada, to be boring, tedious, dull)

To say to be boring, tedious, dull politely in the present tense, use 지루해요 (chee-roo-hae-yoh) · jiruhaeyo. Below is the full conjugation of 지루하다 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
지루해
chee-roo-hae
jiruhae
지루해요
chee-roo-hae-yoh
jiruhaeyo
지루합니다
chee-roo-hahm-nee-dah
jiruhamnida
Past
지루했어
chee-roo-hae-ssuh
jiruhaesseo
지루했어요
chee-roo-hae-ssuh-yoh
jiruhaesseoyo
지루했습니다
chee-roo-hae-sseum-nee-dah
jiruhaesseumnida
Future
지루할 거야
chee-roo-hahl guh-yah
jiruhal geoya
지루할 거예요
chee-roo-hahl guh-yae-yoh
jiruhal geoyeyo
지루할 겁니다
chee-roo-hahl guhm-nee-dah
jiruhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
지루하세요
chee-roo-hah-sae-yoh
jiruhaseyo
Suggestion / Let's Polite (요)
지루해요
chee-roo-hae-yoh
jiruhaeyo
Question Polite (요)
지루해요?
chee-roo-hae-yoh-?
jiruhaeyo?
Connective "and" — (고)
지루하고
chee-roo-hah-goh
jiruhago
Conditional "if" — (면)
지루하면
chee-roo-hah-myuhn
jiruhamyeon
Progressive (고 있어요)
지루하고 있어요
chee-roo-hah-goh ee-ssuh-yoh
jiruhago isseoyo
Want to (고 싶어요)
지루하고 싶어요
chee-roo-hah-goh shee-puh-yoh
jiruhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
지루할 수 있어요
chee-roo-hahl soo ee-ssuh-yoh
jiruhal su isseoyo
Because / So (아/어서)
지루해서
chee-roo-hae-suh
jiruhaeseo
Noun form — (기)
지루하기
chee-roo-hah-gee
jiruhagi
Noun form — (음)
지루함
chee-roo-hahm
jiruham