Verbseoul.
하다 verb
걱정하다geokjeonghadato worry, to feel concerned

To say to worry, to feel concerned politely in the present tense, use 걱정해요 (guhg-chuhng-hae-yoh). Below is the full conjugation of 걱정하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
걱정해
guhg-chuhng-hae
걱정해요
guhg-chuhng-hae-yoh
걱정합니다
guhg-chuhng-hahm-nee-dah
Past
걱정했어
guhg-chuhng-hae-ssuh
걱정했어요
guhg-chuhng-hae-ssuh-yoh
걱정했습니다
guhg-chuhng-hae-sseum-nee-dah
Future
걱정할 거야
guhg-chuhng-hahl- -guh-yah
걱정할 거예요
guhg-chuhng-hahl- -guh-yae-yoh
걱정할 겁니다
guhg-chuhng-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
걱정하세요
guhg-chuhng-hah-sae-yoh
Suggestion / Let's Polite (요)
걱정해요
guhg-chuhng-hae-yoh
Question Polite (요)
걱정해요?
guhg-chuhng-hae-yoh-?
Connective “and” — (고)
걱정하고
guhg-chuhng-hah-goh
Conditional “if” — (면)
걱정하면
guhg-chuhng-hah-myuhn
Noun form — (기)
걱정함
guhg-chuhng-hahm