Verbseoul.
하다 verb (adj)
궤탈사하다gwetalsahadato be very old and dirty

To say to be very old and dirty politely in the present tense, use 궤탈사해요 (gweh-tahl-sah-hae-yoh). Below is the full conjugation of 궤탈사하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
궤탈사해
gweh-tahl-sah-hae
궤탈사해요
gweh-tahl-sah-hae-yoh
궤탈사합니다
gweh-tahl-sah-hahm-nee-dah
Past
궤탈사했어
gweh-tahl-sah-hae-ssuh
궤탈사했어요
gweh-tahl-sah-hae-ssuh-yoh
궤탈사했습니다
gweh-tahl-sah-hae-sseum-nee-dah
Future
궤탈사할 거야
gweh-tahl-sah-hahl- -guh-yah
궤탈사할 거예요
gweh-tahl-sah-hahl- -guh-yae-yoh
궤탈사할 겁니다
gweh-tahl-sah-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
궤탈사하세요
gweh-tahl-sah-hah-sae-yoh
Suggestion / Let's Polite (요)
궤탈사해요
gweh-tahl-sah-hae-yoh
Question Polite (요)
궤탈사해요?
gweh-tahl-sah-hae-yoh-?
Connective “and” — (고)
궤탈사하고
gweh-tahl-sah-hah-goh
Conditional “if” — (면)
궤탈사하면
gweh-tahl-sah-hah-myuhn
Noun form — (기)
궤탈사함
gweh-tahl-sah-hahm