Verbseoul.
하다 verb (adj)
착잡하다chakjaphadacomplicated

To say complicated politely in the present tense, use 착잡해요 (chahg-chah-pae-yoh). Below is the full conjugation of 착잡하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
착잡해
chahg-chah-pae
착잡해요
chahg-chah-pae-yoh
착잡합니다
chahg-chah-pahm-nee-dah
Past
착잡했어
chahg-chah-pae-ssuh
착잡했어요
chahg-chah-pae-ssuh-yoh
착잡했습니다
chahg-chah-pae-sseum-nee-dah
Future
착잡할 거야
chahg-chah-pahl- -guh-yah
착잡할 거예요
chahg-chah-pahl- -guh-yae-yoh
착잡할 겁니다
chahg-chah-pahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
착잡하세요
chahg-chah-pah-sae-yoh
Suggestion / Let's Polite (요)
착잡해요
chahg-chah-pae-yoh
Question Polite (요)
착잡해요?
chahg-chah-pae-yoh-?
Connective “and” — (고)
착잡하고
chahg-chah-pah-goh
Conditional “if” — (면)
착잡하면
chahg-chah-pah-myuhn
Noun form — (기)
착잡함
chahg-chah-pahm