Verbseoul.
descriptive
고되다godoedato be hard, to be tough, to be arduous

To say to be hard, to be tough, to be arduous politely in the present tense, use 고돼요 (goh-dwae-yoh). Below is the full conjugation of 고되다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
고돼
goh-dwae
고돼요
goh-dwae-yoh
고됩니다
goh-dwaem-nee-dah
Past
고됐어
goh-dwae-ssuh
고됐어요
goh-dwae-ssuh-yoh
고됐습니다
goh-dwae-sseum-nee-dah
Future
고될 거야
goh-dwael- -guh-yah
고될 거예요
goh-dwael- -guh-yae-yoh
고될 겁니다
goh-dwael- -guhm-nee-dah

Other useful forms

Command Polite (세요)
고되세요
goh-dwae-sae-yoh
Suggestion / Let's Polite (요)
고돼요
goh-dwae-yoh
Question Polite (요)
고돼요?
goh-dwae-yoh-?
Connective “and” — (고)
고되고
goh-dwae-goh
Conditional “if” — (면)
고되면
goh-dwae-myuhn
Noun form — (기)
고됨
goh-dwaem