가설해
gah-suhl-hae
gaseolhae
가설하다
To say to hypothesise, to make a hypothesis politely in the present tense, use 가설해요 (gah-suhl-hae-yoh) · gaseolhaeyo. Below is the full conjugation of 가설하다 across the three tenses and three everyday speech levels.
Grammar note (하다 verb): 하다 verbs are formed with a Sino-Korean noun + 하다 (e.g. 공부하다 = study + do). 하다 conjugates irregularly: the ㅏ in 하 contracts with the -아/-어 suffix to give 해 (not *하어). Present polite: 해요; past polite: 했어요. The formal ending is 합니다 (not *하습니다). Most noun+하다 compounds follow this pattern uniformly. See all 하다 verbs →
Conjugation table
pron. = pronunciation guide · RR = Revised Romanization
Highlighted = where the stem changes
| Tense | Casual (반말) | Polite (요) | Formal (합니다) |
|---|---|---|---|
| Present | 가설해요 gah-suhl-hae-yoh gaseolhaeyo | 가설합니다 gah-suhl-hahm-nee-dah gaseolhamnida | |
| Past | 가설했어 gah-suhl-hae-ssuh gaseolhaesseo | 가설했어요 gah-suhl-hae-ssuh-yoh gaseolhaesseoyo | 가설했습니다 gah-suhl-hae-sseum-nee-dah gaseolhaesseumnida |
| Future | 가설할 거야 gah-suhl-hahl guh-yah gaseolhal geoya | 가설할 거예요 gah-suhl-hahl guh-yae-yoh gaseolhal geoyeyo | 가설할 겁니다 gah-suhl-hahl guhm-nee-dah gaseolhal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
가설하세요
gah-suhl-hah-sae-yoh
gaseolhaseyo
Suggestion / Let's Polite (요)
가설해요
gah-suhl-hae-yoh
gaseolhaeyo
Question Polite (요)
가설해요?
gah-suhl-hae-yoh-?
gaseolhaeyo?
Connective "and" — (고)
가설하고
gah-suhl-hah-goh
gaseolhago
Conditional "if" — (면)
가설하면
gah-suhl-hah-myuhn
gaseolhamyeon
Progressive (고 있어요)
가설하고 있어요
gah-suhl-hah-goh ee-ssuh-yoh
gaseolhago isseoyo
Want to (고 싶어요)
가설하고 싶어요
gah-suhl-hah-goh shee-puh-yoh
gaseolhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
가설할 수 있어요
gah-suhl-hahl soo ee-ssuh-yoh
gaseolhal su isseoyo
Because / So (아/어서)
가설해서
gah-suhl-hae-suh
gaseolhaeseo
Noun form — (기)
가설하기
gah-suhl-hah-gee
gaseolhagi
Noun form — (음)
가설함
gah-suhl-hahm
gaseolham