Verbseoul.
하다 verb
야기하다yagihadato cause

To say to cause politely in the present tense, use 야기해요 (yah-gee-hae-yoh). Below is the full conjugation of 야기하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
야기해
yah-gee-hae
야기해요
yah-gee-hae-yoh
야기합니다
yah-gee-hahm-nee-dah
Past
야기했어
yah-gee-hae-ssuh
야기했어요
yah-gee-hae-ssuh-yoh
야기했습니다
yah-gee-hae-sseum-nee-dah
Future
야기할 거야
yah-gee-hahl- -guh-yah
야기할 거예요
yah-gee-hahl- -guh-yae-yoh
야기할 겁니다
yah-gee-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
야기하세요
yah-gee-hah-sae-yoh
Suggestion / Let's Polite (요)
야기해요
yah-gee-hae-yoh
Question Polite (요)
야기해요?
yah-gee-hae-yoh-?
Connective “and” — (고)
야기하고
yah-gee-hah-goh
Conditional “if” — (면)
야기하면
yah-gee-hah-myuhn
Noun form — (기)
야기함
yah-gee-hahm