Verbseoul.
regular
굳어지다guteojidato harden, to stiffen

To say to harden, to stiffen politely in the present tense, use 굳어져요 (goo-duh-chyuh-yoh). Below is the full conjugation of 굳어지다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
굳어져
goo-duh-chyuh
굳어져요
goo-duh-chyuh-yoh
굳어집니다
goo-duh-cheem-nee-dah
Past
굳어졌어
goo-duh-chyuh-ssuh
굳어졌어요
goo-duh-chyuh-ssuh-yoh
굳어졌습니다
goo-duh-chyuh-sseum-nee-dah
Future
굳어질 거야
goo-duh-cheel- -guh-yah
굳어질 거예요
goo-duh-cheel- -guh-yae-yoh
굳어질 겁니다
goo-duh-cheel- -guhm-nee-dah

Other useful forms

Command Polite (세요)
굳어지세요
goo-duh-chee-sae-yoh
Suggestion / Let's Polite (요)
굳어져요
goo-duh-chyuh-yoh
Question Polite (요)
굳어져요?
goo-duh-chyuh-yoh-?
Connective “and” — (고)
굳어지고
goo-duh-chee-goh
Conditional “if” — (면)
굳어지면
goo-duh-chee-myuhn
Noun form — (기)
굳어짐
goo-duh-cheem