Verbseoul.
하다 verb (adj)
조마조마하다jomajomahadanervous

To say nervous politely in the present tense, use 조마조마해요 (choh-mah-choh-mah-hae-yoh). Below is the full conjugation of 조마조마하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
조마조마해
choh-mah-choh-mah-hae
조마조마해요
choh-mah-choh-mah-hae-yoh
조마조마합니다
choh-mah-choh-mah-hahm-nee-dah
Past
조마조마했어
choh-mah-choh-mah-hae-ssuh
조마조마했어요
choh-mah-choh-mah-hae-ssuh-yoh
조마조마했습니다
choh-mah-choh-mah-hae-sseum-nee-dah
Future
조마조마할 거야
choh-mah-choh-mah-hahl- -guh-yah
조마조마할 거예요
choh-mah-choh-mah-hahl- -guh-yae-yoh
조마조마할 겁니다
choh-mah-choh-mah-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
조마조마하세요
choh-mah-choh-mah-hah-sae-yoh
Suggestion / Let's Polite (요)
조마조마해요
choh-mah-choh-mah-hae-yoh
Question Polite (요)
조마조마해요?
choh-mah-choh-mah-hae-yoh-?
Connective “and” — (고)
조마조마하고
choh-mah-choh-mah-hah-goh
Conditional “if” — (면)
조마조마하면
choh-mah-choh-mah-hah-myuhn
Noun form — (기)
조마조마함
choh-mah-choh-mah-hahm