Verbseoul.
하다 verb (adj)
치기만만하다chigimanmanhadato be brimming with childishness

To say to be brimming with childishness politely in the present tense, use 치기만만해요 (chee-gee-mahn-mahn-hae-yoh). Below is the full conjugation of 치기만만하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
치기만만해
chee-gee-mahn-mahn-hae
치기만만해요
chee-gee-mahn-mahn-hae-yoh
치기만만합니다
chee-gee-mahn-mahn-hahm-nee-dah
Past
치기만만했어
chee-gee-mahn-mahn-hae-ssuh
치기만만했어요
chee-gee-mahn-mahn-hae-ssuh-yoh
치기만만했습니다
chee-gee-mahn-mahn-hae-sseum-nee-dah
Future
치기만만할 거야
chee-gee-mahn-mahn-hahl- -guh-yah
치기만만할 거예요
chee-gee-mahn-mahn-hahl- -guh-yae-yoh
치기만만할 겁니다
chee-gee-mahn-mahn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
치기만만하세요
chee-gee-mahn-mahn-hah-sae-yoh
Suggestion / Let's Polite (요)
치기만만해요
chee-gee-mahn-mahn-hae-yoh
Question Polite (요)
치기만만해요?
chee-gee-mahn-mahn-hae-yoh-?
Connective “and” — (고)
치기만만하고
chee-gee-mahn-mahn-hah-goh
Conditional “if” — (면)
치기만만하면
chee-gee-mahn-mahn-hah-myuhn
Noun form — (기)
치기만만함
chee-gee-mahn-mahn-hahm