Verbseoul.
하다 verb (adj)
공허하다gongheohadato be void

To say to be void politely in the present tense, use 공허해요 (gohng-huh-hae-yoh). Below is the full conjugation of 공허하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
공허해
gohng-huh-hae
공허해요
gohng-huh-hae-yoh
공허합니다
gohng-huh-hahm-nee-dah
Past
공허했어
gohng-huh-hae-ssuh
공허했어요
gohng-huh-hae-ssuh-yoh
공허했습니다
gohng-huh-hae-sseum-nee-dah
Future
공허할 거야
gohng-huh-hahl- -guh-yah
공허할 거예요
gohng-huh-hahl- -guh-yae-yoh
공허할 겁니다
gohng-huh-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
공허하세요
gohng-huh-hah-sae-yoh
Suggestion / Let's Polite (요)
공허해요
gohng-huh-hae-yoh
Question Polite (요)
공허해요?
gohng-huh-hae-yoh-?
Connective “and” — (고)
공허하고
gohng-huh-hah-goh
Conditional “if” — (면)
공허하면
gohng-huh-hah-myuhn
Noun form — (기)
공허함
gohng-huh-hahm