Verbseoul.
하다 verb
저지하다jeojihadato obstruct

To say to obstruct politely in the present tense, use 저지해요 (chuh-chee-hae-yoh). Below is the full conjugation of 저지하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
저지해
chuh-chee-hae
저지해요
chuh-chee-hae-yoh
저지합니다
chuh-chee-hahm-nee-dah
Past
저지했어
chuh-chee-hae-ssuh
저지했어요
chuh-chee-hae-ssuh-yoh
저지했습니다
chuh-chee-hae-sseum-nee-dah
Future
저지할 거야
chuh-chee-hahl- -guh-yah
저지할 거예요
chuh-chee-hahl- -guh-yae-yoh
저지할 겁니다
chuh-chee-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
저지하세요
chuh-chee-hah-sae-yoh
Suggestion / Let's Polite (요)
저지해요
chuh-chee-hae-yoh
Question Polite (요)
저지해요?
chuh-chee-hae-yoh-?
Connective “and” — (고)
저지하고
chuh-chee-hah-goh
Conditional “if” — (면)
저지하면
chuh-chee-hah-myuhn
Noun form — (기)
저지함
chuh-chee-hahm