Verbseoul.
하다 verb (adj)
적절하다jeokjeolhadato be suited, to be appropriate

To say to be suited, to be appropriate politely in the present tense, use 적절해요 (chuhg-chuhl-hae-yoh). Below is the full conjugation of 적절하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
적절해
chuhg-chuhl-hae
적절해요
chuhg-chuhl-hae-yoh
적절합니다
chuhg-chuhl-hahm-nee-dah
Past
적절했어
chuhg-chuhl-hae-ssuh
적절했어요
chuhg-chuhl-hae-ssuh-yoh
적절했습니다
chuhg-chuhl-hae-sseum-nee-dah
Future
적절할 거야
chuhg-chuhl-hahl- -guh-yah
적절할 거예요
chuhg-chuhl-hahl- -guh-yae-yoh
적절할 겁니다
chuhg-chuhl-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
적절하세요
chuhg-chuhl-hah-sae-yoh
Suggestion / Let's Polite (요)
적절해요
chuhg-chuhl-hae-yoh
Question Polite (요)
적절해요?
chuhg-chuhl-hae-yoh-?
Connective “and” — (고)
적절하고
chuhg-chuhl-hah-goh
Conditional “if” — (면)
적절하면
chuhg-chuhl-hah-myuhn
Noun form — (기)
적절함
chuhg-chuhl-hahm