Verbseoul.
ㅎ irregular
저러다jeoreodashort for 저리하다 (jeorihada, “to behave that way

To say short for 저리하다 (jeorihada, “to behave that way politely in the present tense, use 저래요 (chuh-rae-yoh). Below is the full conjugation of 저러다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
저래
chuh-rae
저래요
chuh-rae-yoh
저럽니다
chuh-ruhm-nee-dah
Past
저랬어
chuh-rae-ssuh
저랬어요
chuh-rae-ssuh-yoh
저랬습니다
chuh-rae-sseum-nee-dah
Future
저럴 거야
chuh-ruhl- -guh-yah
저럴 거예요
chuh-ruhl- -guh-yae-yoh
저럴 겁니다
chuh-ruhl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
저러세요
chuh-ruh-sae-yoh
Suggestion / Let's Polite (요)
저래요
chuh-rae-yoh
Question Polite (요)
저래요?
chuh-rae-yoh-?
Connective “and” — (고)
저러고
chuh-ruh-goh
Conditional “if” — (면)
저러면
chuh-ruh-myuhn
Noun form — (기)
저럼
chuh-ruhm