Verbseoul.
하다 verb (adj)
유머러스하다yumeoreoseuhadato be humorous

To say to be humorous politely in the present tense, use 유머러스해요 (yoo-muh-ruh-seu-hae-yoh). Below is the full conjugation of 유머러스하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
유머러스해
yoo-muh-ruh-seu-hae
유머러스해요
yoo-muh-ruh-seu-hae-yoh
유머러스합니다
yoo-muh-ruh-seu-hahm-nee-dah
Past
유머러스했어
yoo-muh-ruh-seu-hae-ssuh
유머러스했어요
yoo-muh-ruh-seu-hae-ssuh-yoh
유머러스했습니다
yoo-muh-ruh-seu-hae-sseum-nee-dah
Future
유머러스할 거야
yoo-muh-ruh-seu-hahl- -guh-yah
유머러스할 거예요
yoo-muh-ruh-seu-hahl- -guh-yae-yoh
유머러스할 겁니다
yoo-muh-ruh-seu-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
유머러스하세요
yoo-muh-ruh-seu-hah-sae-yoh
Suggestion / Let's Polite (요)
유머러스해요
yoo-muh-ruh-seu-hae-yoh
Question Polite (요)
유머러스해요?
yoo-muh-ruh-seu-hae-yoh-?
Connective “and” — (고)
유머러스하고
yoo-muh-ruh-seu-hah-goh
Conditional “if” — (면)
유머러스하면
yoo-muh-ruh-seu-hah-myuhn
Noun form — (기)
유머러스함
yoo-muh-ruh-seu-hahm