Verbseoul.
regular
깇다gitda-2to cough (must always take the object 기침 (gichim))

To say to cough (must always take the object 기침 (gichim)) politely in the present tense, use 깇어요 (gee-chuh-yoh). Below is the full conjugation of 깇다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
깇어
gee-chuh
깇어요
gee-chuh-yoh
깇습니다
geet-seum-nee-dah
Past
깇었어
gee-chuh-ssuh
깇었어요
gee-chuh-ssuh-yoh
깇었습니다
gee-chuh-sseum-nee-dah
Future
깇을 거야
gee-cheul- -guh-yah
깇을 거예요
gee-cheul- -guh-yae-yoh
깇을 겁니다
gee-cheul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
깇으세요
gee-cheu-sae-yoh
Suggestion / Let's Polite (요)
깇어요
gee-chuh-yoh
Question Polite (요)
깇어요?
gee-chuh-yoh-?
Connective “and” — (고)
깇고
geet-goh
Conditional “if” — (면)
깇으면
gee-cheu-myuhn
Noun form — (기)
깇음
gee-cheum