Verbseoul.
regular
찡구다jjinggudato insert, to fit into, to put in

To say to insert, to fit into, to put in politely in the present tense, use 찡궈요 (jjeeng-gwuh-yoh). Below is the full conjugation of 찡구다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
찡궈
jjeeng-gwuh
찡궈요
jjeeng-gwuh-yoh
찡굽니다
jjeeng-goom-nee-dah
Past
찡궜어
jjeeng-gwuh-ssuh
찡궜어요
jjeeng-gwuh-ssuh-yoh
찡궜습니다
jjeeng-gwuh-sseum-nee-dah
Future
찡굴 거야
jjeeng-gool- -guh-yah
찡굴 거예요
jjeeng-gool- -guh-yae-yoh
찡굴 겁니다
jjeeng-gool- -guhm-nee-dah

Other useful forms

Command Polite (세요)
찡구세요
jjeeng-goo-sae-yoh
Suggestion / Let's Polite (요)
찡궈요
jjeeng-gwuh-yoh
Question Polite (요)
찡궈요?
jjeeng-gwuh-yoh-?
Connective “and” — (고)
찡구고
jjeeng-goo-goh
Conditional “if” — (면)
찡구면
jjeeng-goo-myuhn
Noun form — (기)
찡굼
jjeeng-goom