Verbseoul.
하다 verb

과시하다 conjugation (gwasihada, to flaunt, to show off)

To say to flaunt, to show off politely in the present tense, use 과시해요 (gwah-shee-hae-yoh) · gwasihaeyo. Below is the full conjugation of 과시하다 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

TenseCasual (반말)Polite (요)Formal (합니다)
Present
과시해
gwah-shee-hae
gwasihae
과시해요
gwah-shee-hae-yoh
gwasihaeyo
과시합니다
gwah-shee-hahm-nee-dah
gwasihamnida
Past
과시했어
gwah-shee-hae-ssuh
gwasihaesseo
과시했어요
gwah-shee-hae-ssuh-yoh
gwasihaesseoyo
과시했습니다
gwah-shee-hae-sseum-nee-dah
gwasihaesseumnida
Future
과시할 거야
gwah-shee-hahl guh-yah
gwasihal geoya
과시할 거예요
gwah-shee-hahl guh-yae-yoh
gwasihal geoyeyo
과시할 겁니다
gwah-shee-hahl guhm-nee-dah
gwasihal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
과시하세요
gwah-shee-hah-sae-yoh
gwasihaseyo
Suggestion / Let's Polite (요)
과시해요
gwah-shee-hae-yoh
gwasihaeyo
Question Polite (요)
과시해요?
gwah-shee-hae-yoh-?
gwasihaeyo?
Connective "and" — (고)
과시하고
gwah-shee-hah-goh
gwasihago
Conditional "if" — (면)
과시하면
gwah-shee-hah-myuhn
gwasihamyeon
Progressive (고 있어요)
과시하고 있어요
gwah-shee-hah-goh ee-ssuh-yoh
gwasihago isseoyo
Want to (고 싶어요)
과시하고 싶어요
gwah-shee-hah-goh shee-puh-yoh
gwasihago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
과시할 수 있어요
gwah-shee-hahl soo ee-ssuh-yoh
gwasihal su isseoyo
Because / So (아/어서)
과시해서
gwah-shee-hae-suh
gwasihaeseo
Noun form — (기)
과시하기
gwah-shee-hah-gee
gwasihagi
Noun form — (음)
과시함
gwah-shee-hahm
gwasiham