Verbseoul.
ㅎ irregular (adj)
커다랗다keodaratdaextremely huge

To say extremely huge politely in the present tense, use 커다래요 (kuh-dah-rae-yoh). Below is the full conjugation of 커다랗다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
커다래
kuh-dah-rae
커다래요
kuh-dah-rae-yoh
커다랗습니다
kuh-dah-rah-sseum-nee-dah
Past
커다랬어
kuh-dah-rae-ssuh
커다랬어요
kuh-dah-rae-ssuh-yoh
커다랬습니다
kuh-dah-rae-sseum-nee-dah
Future
커다랄 거야
kuh-dah-rahl- -guh-yah
커다랄 거예요
kuh-dah-rahl- -guh-yae-yoh
커다랄 겁니다
kuh-dah-rahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
커다라세요
kuh-dah-rah-sae-yoh
Suggestion / Let's Polite (요)
커다래요
kuh-dah-rae-yoh
Question Polite (요)
커다래요?
kuh-dah-rae-yoh-?
Connective “and” — (고)
커다랗고
kuh-dah-rah-koh
Conditional “if” — (면)
커다라면
kuh-dah-rah-myuhn
Noun form — (기)
커다람
kuh-dah-rahm