Verbseoul.
하다 verb (adj)
엉큼하다eongkeumhadahideous, insidious, wily

To say hideous, insidious, wily politely in the present tense, use 엉큼해요 (uhng-keum-hae-yoh). Below is the full conjugation of 엉큼하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
엉큼해
uhng-keum-hae
엉큼해요
uhng-keum-hae-yoh
엉큼합니다
uhng-keum-hahm-nee-dah
Past
엉큼했어
uhng-keum-hae-ssuh
엉큼했어요
uhng-keum-hae-ssuh-yoh
엉큼했습니다
uhng-keum-hae-sseum-nee-dah
Future
엉큼할 거야
uhng-keum-hahl- -guh-yah
엉큼할 거예요
uhng-keum-hahl- -guh-yae-yoh
엉큼할 겁니다
uhng-keum-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
엉큼하세요
uhng-keum-hah-sae-yoh
Suggestion / Let's Polite (요)
엉큼해요
uhng-keum-hae-yoh
Question Polite (요)
엉큼해요?
uhng-keum-hae-yoh-?
Connective “and” — (고)
엉큼하고
uhng-keum-hah-goh
Conditional “if” — (면)
엉큼하면
uhng-keum-hah-myuhn
Noun form — (기)
엉큼함
uhng-keum-hahm