Verbseoul.
ㄹ stem
줄어들다juleodeuldaTo diminish or decrease

To say To diminish or decrease politely in the present tense, use 줄어들어요 (choo-ruh-deu-ruh-yoh). Below is the full conjugation of 줄어들다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
줄어들어
choo-ruh-deu-ruh
줄어들어요
choo-ruh-deu-ruh-yoh
줄어듭니다
choo-ruh-deum-nee-dah
Past
줄어들었어
choo-ruh-deu-ruh-ssuh
줄어들었어요
choo-ruh-deu-ruh-ssuh-yoh
줄어들었습니다
choo-ruh-deu-ruh-sseum-nee-dah
Future
줄어들 거야
choo-ruh-deul- -guh-yah
줄어들 거예요
choo-ruh-deul- -guh-yae-yoh
줄어들 겁니다
choo-ruh-deul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
줄어드세요
choo-ruh-deu-sae-yoh
Suggestion / Let's Polite (요)
줄어들어요
choo-ruh-deu-ruh-yoh
Question Polite (요)
줄어들어요?
choo-ruh-deu-ruh-yoh-?
Connective “and” — (고)
줄어들고
choo-ruh-deul-goh
Conditional “if” — (면)
줄어들면
choo-ruh-deul-myuhn
Noun form — (기)
줄어듦
choo-ruh-deum