Verbseoul.
하다 verb (adj)

강하다 conjugation (ganghada, strong, powerful)

To say strong, powerful politely in the present tense, use 강해요 (gahng-hae-yoh) · ganghaeyo. Below is the full conjugation of 강하다 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
강해
gahng-hae
ganghae
강해요
gahng-hae-yoh
ganghaeyo
강합니다
gahng-hahm-nee-dah
ganghamnida
Past
강했어
gahng-hae-ssuh
ganghaesseo
강했어요
gahng-hae-ssuh-yoh
ganghaesseoyo
강했습니다
gahng-hae-sseum-nee-dah
ganghaesseumnida
Future
강할 거야
gahng-hahl guh-yah
ganghal geoya
강할 거예요
gahng-hahl guh-yae-yoh
ganghal geoyeyo
강할 겁니다
gahng-hahl guhm-nee-dah
ganghal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
강하세요
gahng-hah-sae-yoh
ganghaseyo
Suggestion / Let's Polite (요)
강해요
gahng-hae-yoh
ganghaeyo
Question Polite (요)
강해요?
gahng-hae-yoh-?
ganghaeyo?
Connective "and" — (고)
강하고
gahng-hah-goh
ganghago
Conditional "if" — (면)
강하면
gahng-hah-myuhn
ganghamyeon
Progressive (고 있어요)
강하고 있어요
gahng-hah-goh ee-ssuh-yoh
ganghago isseoyo
Want to (고 싶어요)
강하고 싶어요
gahng-hah-goh shee-puh-yoh
ganghago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
강할 수 있어요
gahng-hahl soo ee-ssuh-yoh
ganghal su isseoyo
Because / So (아/어서)
강해서
gahng-hae-suh
ganghaeseo
Noun form — (기)
강하기
gahng-hah-gee
ganghagi
Noun form — (음)
강함
gahng-hahm
gangham