Verbseoul.
regular

찡구다 conjugation (jjingguda, to 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) · jjinggwoyo. Below is the full conjugation of 찡구다 across the three tenses and three everyday speech levels.

Grammar note (regular): Regular verbs and adjectives conjugate predictably. Before 어-series suffixes, vowels may contract (가 + 아 → 가, 보 + 아 → 봐), but no consonant in the stem changes. If the final vowel of the stem is ㅏ or ㅗ, use 아; otherwise use 어. Consonant-final stems: 먹 + 어 → 먹어; vowel-final: 가 + 아 → 가.

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

TenseCasual (반말)Polite (요)Formal (합니다)
Present
찡궈
jjeeng-gwuh
jjinggwo
찡궈요
jjeeng-gwuh-yoh
jjinggwoyo
찡굽니다
jjeeng-goom-nee-dah
jjinggumnida
Past
찡궜어
jjeeng-gwuh-ssuh
jjinggwosseo
찡궜어요
jjeeng-gwuh-ssuh-yoh
jjinggwosseoyo
찡궜습니다
jjeeng-gwuh-sseum-nee-dah
jjinggwosseumnida
Future
찡굴 거야
jjeeng-gool guh-yah
jjinggul geoya
찡굴 거예요
jjeeng-gool guh-yae-yoh
jjinggul geoyeyo
찡굴 겁니다
jjeeng-gool guhm-nee-dah
jjinggul geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
찡구세요
jjeeng-goo-sae-yoh
jjingguseyo
Suggestion / Let's Polite (요)
찡궈요
jjeeng-gwuh-yoh
jjinggwoyo
Question Polite (요)
찡궈요?
jjeeng-gwuh-yoh-?
jjinggwoyo?
Connective "and" — (고)
찡구고
jjeeng-goo-goh
jjinggugo
Conditional "if" — (면)
찡구면
jjeeng-goo-myuhn
jjinggumyeon
Progressive (고 있어요)
찡구고 있어요
jjeeng-goo-goh ee-ssuh-yoh
jjinggugo isseoyo
Want to (고 싶어요)
찡구고 싶어요
jjeeng-goo-goh shee-puh-yoh
jjinggugo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
찡굴 수 있어요
jjeeng-gool soo ee-ssuh-yoh
jjinggul su isseoyo
Because / So (아/어서)
찡궈서
jjeeng-gwuh-suh
jjinggwoseo
Noun form — (기)
찡구기
jjeeng-goo-gee
jjinggugi
Noun form — (음)
찡굼
jjeeng-goom
jjinggum