Verbseoul.
하다 verb
고민하다gominhadato worry, to be concerned

To say to worry, to be concerned politely in the present tense, use 고민해요 (goh-meen-hae-yoh). Below is the full conjugation of 고민하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
고민해
goh-meen-hae
고민해요
goh-meen-hae-yoh
고민합니다
goh-meen-hahm-nee-dah
Past
고민했어
goh-meen-hae-ssuh
고민했어요
goh-meen-hae-ssuh-yoh
고민했습니다
goh-meen-hae-sseum-nee-dah
Future
고민할 거야
goh-meen-hahl- -guh-yah
고민할 거예요
goh-meen-hahl- -guh-yae-yoh
고민할 겁니다
goh-meen-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
고민하세요
goh-meen-hah-sae-yoh
Suggestion / Let's Polite (요)
고민해요
goh-meen-hae-yoh
Question Polite (요)
고민해요?
goh-meen-hae-yoh-?
Connective “and” — (고)
고민하고
goh-meen-hah-goh
Conditional “if” — (면)
고민하면
goh-meen-hah-myuhn
Noun form — (기)
고민함
goh-meen-hahm