Verbseoul.
regular

굳어지다 conjugation (guteojida, to harden, to stiffen)

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

Grammar note (regular): Regular verbs and adjectives conjugate predictably. Before 어-series suffixes, vowels may contract (가 + 아 → 가, 보 + 아 → 봐), but no consonant in the stem changes. If the final vowel of the stem is ㅏ or ㅗ, use 아; otherwise use 어. Consonant-final stems: 먹 + 어 → 먹어; vowel-final: 가 + 아 → 가.

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

TenseCasual (반말)Polite (요)Formal (합니다)
Present
굳어져
goo-duh-chyuh
gudeojyeo
굳어져요
goo-duh-chyuh-yoh
gudeojyeoyo
굳어집니다
goo-duh-cheem-nee-dah
gudeojimnida
Past
굳어졌어
goo-duh-chyuh-ssuh
gudeojyeosseo
굳어졌어요
goo-duh-chyuh-ssuh-yoh
gudeojyeosseoyo
굳어졌습니다
goo-duh-chyuh-sseum-nee-dah
gudeojyeosseumnida
Future
굳어질 거야
goo-duh-cheel guh-yah
gudeojil geoya
굳어질 거예요
goo-duh-cheel guh-yae-yoh
gudeojil geoyeyo
굳어질 겁니다
goo-duh-cheel guhm-nee-dah
gudeojil geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
굳어지세요
goo-duh-chee-sae-yoh
gudeojiseyo
Suggestion / Let's Polite (요)
굳어져요
goo-duh-chyuh-yoh
gudeojyeoyo
Question Polite (요)
굳어져요?
goo-duh-chyuh-yoh-?
gudeojyeoyo?
Connective "and" — (고)
굳어지고
goo-duh-chee-goh
gudeojigo
Conditional "if" — (면)
굳어지면
goo-duh-chee-myuhn
gudeojimyeon
Progressive (고 있어요)
굳어지고 있어요
goo-duh-chee-goh ee-ssuh-yoh
gudeojigo isseoyo
Want to (고 싶어요)
굳어지고 싶어요
goo-duh-chee-goh shee-puh-yoh
gudeojigo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
굳어질 수 있어요
goo-duh-cheel soo ee-ssuh-yoh
gudeojil su isseoyo
Because / So (아/어서)
굳어져서
goo-duh-chyuh-suh
gudeojyeoseo
Noun form — (기)
굳어지기
goo-duh-chee-gee
gudeojigi
Noun form — (음)
굳어짐
goo-duh-cheem
gudeojim