Verbseoul.
ㅂ irregular (adj)
즐겁다jeulgeopdato be pleasant, to be enjoyable

To say to be pleasant, to be enjoyable politely in the present tense, use 즐거워요 (cheul-guh-wuh-yoh). Below is the full conjugation of 즐겁다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
즐거워
cheul-guh-wuh
즐거워요
cheul-guh-wuh-yoh
즐겁습니다
cheul-guhp-sseum-nee-dah
Past
즐거웠어
cheul-guh-wuh-ssuh
즐거웠어요
cheul-guh-wuh-ssuh-yoh
즐거웠습니다
cheul-guh-wuh-sseum-nee-dah
Future
즐거울 거야
cheul-guh-ool- -guh-yah
즐거울 거예요
cheul-guh-ool- -guh-yae-yoh
즐거울 겁니다
cheul-guh-ool- -guhm-nee-dah

Other useful forms

Command Polite (세요)
즐거우세요
cheul-guh-oo-sae-yoh
Suggestion / Let's Polite (요)
즐거워요
cheul-guh-wuh-yoh
Question Polite (요)
즐거워요?
cheul-guh-wuh-yoh-?
Connective “and” — (고)
즐겁고
cheul-guhp-goh
Conditional “if” — (면)
즐거우면
cheul-guh-oo-myuhn
Noun form — (기)
즐거움
cheul-guh-oom