Verbseoul.
ㅎ irregular (adj)

아심턔닣다 conjugation (asimtyaenitda, to be thankful for a favor someone has done)

To say to be thankful for a favor someone has done politely in the present tense, use 아심턔니여요 (ah-sheem-tyae-nee-yuh-yoh) · asimtyaeniyeoyo. Below is the full conjugation of 아심턔닣다 across the three tenses and three everyday speech levels.

Grammar note (ㅎ irregular (adj)): ㅎ-irregular adjectives end in 다 with ㅎ as the final consonant. Before a vowel, the ㅎ drops and the preceding vowel often contracts: 노랗다 (yellow) → 노래요, 이렇다 (like this) → 이래요. The ㅎ stays before consonant suffixes: 노랗고, 이렇지. See all ㅎ-irregular adjectives →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
아심턔니여
ah-sheem-tyae-nee-yuh
asimtyaeniyeo
아심턔니여요
ah-sheem-tyae-nee-yuh-yoh
asimtyaeniyeoyo
아심턔닣습니다
ah-sheem-tyae-nee-sseum-nee-dah
asimtyaenisseumnida
Past
아심턔니였어
ah-sheem-tyae-nee-yuh-ssuh
asimtyaeniyeosseo
아심턔니였어요
ah-sheem-tyae-nee-yuh-ssuh-yoh
asimtyaeniyeosseoyo
아심턔니였습니다
ah-sheem-tyae-nee-yuh-sseum-nee-dah
asimtyaeniyeosseumnida
Future
아심턔닐 거야
ah-sheem-tyae-neel guh-yah
asimtyaenil geoya
아심턔닐 거예요
ah-sheem-tyae-neel guh-yae-yoh
asimtyaenil geoyeyo
아심턔닐 겁니다
ah-sheem-tyae-neel guhm-nee-dah
asimtyaenil geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
아심턔니세요
ah-sheem-tyae-nee-sae-yoh
asimtyaeniseyo
Suggestion / Let's Polite (요)
아심턔니여요
ah-sheem-tyae-nee-yuh-yoh
asimtyaeniyeoyo
Question Polite (요)
아심턔니여요?
ah-sheem-tyae-nee-yuh-yoh-?
asimtyaeniyeoyo?
Connective "and" — (고)
아심턔닣고
ah-sheem-tyae-nee-koh
asimtyaeniko
Conditional "if" — (면)
아심턔니면
ah-sheem-tyae-nee-myuhn
asimtyaenimyeon
Progressive (고 있어요)
아심턔닣고 있어요
ah-sheem-tyae-nee-koh ee-ssuh-yoh
asimtyaeniko isseoyo
Want to (고 싶어요)
아심턔닣고 싶어요
ah-sheem-tyae-nee-koh shee-puh-yoh
asimtyaeniko sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
아심턔닐 수 있어요
ah-sheem-tyae-neel soo ee-ssuh-yoh
asimtyaenil su isseoyo
Because / So (아/어서)
아심턔니여서
ah-sheem-tyae-nee-yuh-suh
asimtyaeniyeoseo
Noun form — (기)
아심턔닣기
ah-sheem-tyae-nee-kee
asimtyaeniki
Noun form — (음)
아심턔님
ah-sheem-tyae-neem
asimtyaenim