Verbseoul.
하다 verb (adj)
특정하다teukjeonghadaparticular, specific, certain

To say particular, specific, certain politely in the present tense, use 특정해요 (teug-chuhng-hae-yoh). Below is the full conjugation of 특정하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
특정해
teug-chuhng-hae
특정해요
teug-chuhng-hae-yoh
특정합니다
teug-chuhng-hahm-nee-dah
Past
특정했어
teug-chuhng-hae-ssuh
특정했어요
teug-chuhng-hae-ssuh-yoh
특정했습니다
teug-chuhng-hae-sseum-nee-dah
Future
특정할 거야
teug-chuhng-hahl- -guh-yah
특정할 거예요
teug-chuhng-hahl- -guh-yae-yoh
특정할 겁니다
teug-chuhng-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
특정하세요
teug-chuhng-hah-sae-yoh
Suggestion / Let's Polite (요)
특정해요
teug-chuhng-hae-yoh
Question Polite (요)
특정해요?
teug-chuhng-hae-yoh-?
Connective “and” — (고)
특정하고
teug-chuhng-hah-goh
Conditional “if” — (면)
특정하면
teug-chuhng-hah-myuhn
Noun form — (기)
특정함
teug-chuhng-hahm