Verbseoul.
regular
대변보다daebyeonbodato evacuate one's bowels

To say to evacuate one's bowels politely in the present tense, use 대변봐요 (dae-byuhn-bwah-yoh). Below is the full conjugation of 대변보다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
대변봐
dae-byuhn-bwah
대변봐요
dae-byuhn-bwah-yoh
대변봅니다
dae-byuhn-bohm-nee-dah
Past
대변봤어
dae-byuhn-bwah-ssuh
대변봤어요
dae-byuhn-bwah-ssuh-yoh
대변봤습니다
dae-byuhn-bwah-sseum-nee-dah
Future
대변볼 거야
dae-byuhn-bohl- -guh-yah
대변볼 거예요
dae-byuhn-bohl- -guh-yae-yoh
대변볼 겁니다
dae-byuhn-bohl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
대변보세요
dae-byuhn-boh-sae-yoh
Suggestion / Let's Polite (요)
대변봐요
dae-byuhn-bwah-yoh
Question Polite (요)
대변봐요?
dae-byuhn-bwah-yoh-?
Connective “and” — (고)
대변보고
dae-byuhn-boh-goh
Conditional “if” — (면)
대변보면
dae-byuhn-boh-myuhn
Noun form — (기)
대변봄
dae-byuhn-bohm