Verbseoul.
하다 verb
등락하다deungrakhadato rise and fall, to fluctuate

To say to rise and fall, to fluctuate politely in the present tense, use 등락해요 (deung-nah-kae-yoh). Below is the full conjugation of 등락하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
등락해
deung-nah-kae
등락해요
deung-nah-kae-yoh
등락합니다
deung-nah-kahm-nee-dah
Past
등락했어
deung-nah-kae-ssuh
등락했어요
deung-nah-kae-ssuh-yoh
등락했습니다
deung-nah-kae-sseum-nee-dah
Future
등락할 거야
deung-nah-kahl- -guh-yah
등락할 거예요
deung-nah-kahl- -guh-yae-yoh
등락할 겁니다
deung-nah-kahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
등락하세요
deung-nah-kah-sae-yoh
Suggestion / Let's Polite (요)
등락해요
deung-nah-kae-yoh
Question Polite (요)
등락해요?
deung-nah-kae-yoh-?
Connective “and” — (고)
등락하고
deung-nah-kah-goh
Conditional “if” — (면)
등락하면
deung-nah-kah-myuhn
Noun form — (기)
등락함
deung-nah-kahm