Verbseoul.
하다 verb
기침하다gichimhadato cough

To say to cough politely in the present tense, use 기침해요 (gee-cheem-hae-yoh). Below is the full conjugation of 기침하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
기침해
gee-cheem-hae
기침해요
gee-cheem-hae-yoh
기침합니다
gee-cheem-hahm-nee-dah
Past
기침했어
gee-cheem-hae-ssuh
기침했어요
gee-cheem-hae-ssuh-yoh
기침했습니다
gee-cheem-hae-sseum-nee-dah
Future
기침할 거야
gee-cheem-hahl- -guh-yah
기침할 거예요
gee-cheem-hahl- -guh-yae-yoh
기침할 겁니다
gee-cheem-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
기침하세요
gee-cheem-hah-sae-yoh
Suggestion / Let's Polite (요)
기침해요
gee-cheem-hae-yoh
Question Polite (요)
기침해요?
gee-cheem-hae-yoh-?
Connective “and” — (고)
기침하고
gee-cheem-hah-goh
Conditional “if” — (면)
기침하면
gee-cheem-hah-myuhn
Noun form — (기)
기침함
gee-cheem-hahm