Verbseoul.
regular
끄덕이다kkeudeokidato nod

To say to nod politely in the present tense, use 끄덕여요 (ggeu-duh-gyuh-yoh). Below is the full conjugation of 끄덕이다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
끄덕여
ggeu-duh-gyuh
끄덕여요
ggeu-duh-gyuh-yoh
끄덕입니다
ggeu-duh-geem-nee-dah
Past
끄덕였어
ggeu-duh-gyuh-ssuh
끄덕였어요
ggeu-duh-gyuh-ssuh-yoh
끄덕였습니다
ggeu-duh-gyuh-sseum-nee-dah
Future
끄덕일 거야
ggeu-duh-geel- -guh-yah
끄덕일 거예요
ggeu-duh-geel- -guh-yae-yoh
끄덕일 겁니다
ggeu-duh-geel- -guhm-nee-dah

Other useful forms

Command Polite (세요)
끄덕이세요
ggeu-duh-gee-sae-yoh
Suggestion / Let's Polite (요)
끄덕여요
ggeu-duh-gyuh-yoh
Question Polite (요)
끄덕여요?
ggeu-duh-gyuh-yoh-?
Connective “and” — (고)
끄덕이고
ggeu-duh-gee-goh
Conditional “if” — (면)
끄덕이면
ggeu-duh-gee-myuhn
Noun form — (기)
끄덕임
ggeu-duh-geem