Verbseoul.
하다 verb

야댜하다 conjugation (yadyahada, to speak without honorifics)

To say to speak without honorifics politely in the present tense, use 야댜해요 (yah-dyah-hae-yoh) · yadyahaeyo. Below is the full conjugation of 야댜하다 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
야댜해
yah-dyah-hae
yadyahae
야댜해요
yah-dyah-hae-yoh
yadyahaeyo
야댜합니다
yah-dyah-hahm-nee-dah
yadyahamnida
Past
야댜했어
yah-dyah-hae-ssuh
yadyahaesseo
야댜했어요
yah-dyah-hae-ssuh-yoh
yadyahaesseoyo
야댜했습니다
yah-dyah-hae-sseum-nee-dah
yadyahaesseumnida
Future
야댜할 거야
yah-dyah-hahl guh-yah
yadyahal geoya
야댜할 거예요
yah-dyah-hahl guh-yae-yoh
yadyahal geoyeyo
야댜할 겁니다
yah-dyah-hahl guhm-nee-dah
yadyahal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
야댜하세요
yah-dyah-hah-sae-yoh
yadyahaseyo
Suggestion / Let's Polite (요)
야댜해요
yah-dyah-hae-yoh
yadyahaeyo
Question Polite (요)
야댜해요?
yah-dyah-hae-yoh-?
yadyahaeyo?
Connective "and" — (고)
야댜하고
yah-dyah-hah-goh
yadyahago
Conditional "if" — (면)
야댜하면
yah-dyah-hah-myuhn
yadyahamyeon
Progressive (고 있어요)
야댜하고 있어요
yah-dyah-hah-goh ee-ssuh-yoh
yadyahago isseoyo
Want to (고 싶어요)
야댜하고 싶어요
yah-dyah-hah-goh shee-puh-yoh
yadyahago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
야댜할 수 있어요
yah-dyah-hahl soo ee-ssuh-yoh
yadyahal su isseoyo
Because / So (아/어서)
야댜해서
yah-dyah-hae-suh
yadyahaeseo
Noun form — (기)
야댜하기
yah-dyah-hah-gee
yadyahagi
Noun form — (음)
야댜함
yah-dyah-hahm
yadyaham