Verbseoul.
하다 verb (adj)

비옥하다 conjugation (biokhada, to be rich, to be fertile)

To say to be rich, to be fertile politely in the present tense, use 비옥해요 (bee-oh-kae-yoh) · biokaeyo. Below is the full conjugation of 비옥하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb (adj)): 하다 adjectives use the same verb 하다 as a suffix to turn descriptive nouns into predicates (행복하다 = to be happy). They conjugate identically to 하다 verbs: the 하 contracts before -아/-어 suffixes to give 해. 행복해요, 행복했어요, 행복합니다. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
비옥해
bee-oh-kae
biokae
비옥해요
bee-oh-kae-yoh
biokaeyo
비옥합니다
bee-oh-kahm-nee-dah
biokamnida
Past
비옥했어
bee-oh-kae-ssuh
biokaesseo
비옥했어요
bee-oh-kae-ssuh-yoh
biokaesseoyo
비옥했습니다
bee-oh-kae-sseum-nee-dah
biokaesseumnida
Future
비옥할 거야
bee-oh-kahl guh-yah
biokal geoya
비옥할 거예요
bee-oh-kahl guh-yae-yoh
biokal geoyeyo
비옥할 겁니다
bee-oh-kahl guhm-nee-dah
biokal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
비옥하세요
bee-oh-kah-sae-yoh
biokaseyo
Suggestion / Let's Polite (요)
비옥해요
bee-oh-kae-yoh
biokaeyo
Question Polite (요)
비옥해요?
bee-oh-kae-yoh-?
biokaeyo?
Connective "and" — (고)
비옥하고
bee-oh-kah-goh
biokago
Conditional "if" — (면)
비옥하면
bee-oh-kah-myuhn
biokamyeon
Progressive (고 있어요)
비옥하고 있어요
bee-oh-kah-goh ee-ssuh-yoh
biokago isseoyo
Want to (고 싶어요)
비옥하고 싶어요
bee-oh-kah-goh shee-puh-yoh
biokago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
비옥할 수 있어요
bee-oh-kahl soo ee-ssuh-yoh
biokal su isseoyo
Because / So (아/어서)
비옥해서
bee-oh-kae-suh
biokaeseo
Noun form — (기)
비옥하기
bee-oh-kah-gee
biokagi
Noun form — (음)
비옥함
bee-oh-kahm
biokam