밤새
bahm-sae
bamsae
regular
밤새다
To say to stay up all night, pull an all-nighter politely in the present tense, use 밤새요 (bahm-sae-yoh) · bamsaeyo. Below is the full conjugation of 밤새다 across the three tenses and three everyday speech levels.
Grammar note (regular): Regular verbs and adjectives conjugate predictably. Before 어-series suffixes, vowels may contract (가 + 아 → 가, 보 + 아 → 봐), but no consonant in the stem changes. If the final vowel of the stem is ㅏ or ㅗ, use 아; otherwise use 어. Consonant-final stems: 먹 + 어 → 먹어; vowel-final: 가 + 아 → 가.
Conjugation table
pron. = pronunciation guide · RR = Revised Romanization
| Tense | Casual (반말) | Polite (요) | Formal (합니다) |
|---|---|---|---|
| Present | 밤새요 bahm-sae-yoh bamsaeyo | 밤샙니다 bahm-saem-nee-dah bamsaemnida | |
| Past | 밤샜어 bahm-sae-ssuh bamsaesseo | 밤샜어요 bahm-sae-ssuh-yoh bamsaesseoyo | 밤샜습니다 bahm-sae-sseum-nee-dah bamsaesseumnida |
| Future | 밤샐 거야 bahm-sael guh-yah bamsael geoya | 밤샐 거예요 bahm-sael guh-yae-yoh bamsael geoyeyo | 밤샐 겁니다 bahm-sael guhm-nee-dah bamsael geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
밤새세요
bahm-sae-sae-yoh
bamsaeseyo
Suggestion / Let's Polite (요)
밤새요
bahm-sae-yoh
bamsaeyo
Question Polite (요)
밤새요?
bahm-sae-yoh-?
bamsaeyo?
Connective "and" — (고)
밤새고
bahm-sae-goh
bamsaego
Conditional "if" — (면)
밤새면
bahm-sae-myuhn
bamsaemyeon
Progressive (고 있어요)
밤새고 있어요
bahm-sae-goh ee-ssuh-yoh
bamsaego isseoyo
Want to (고 싶어요)
밤새고 싶어요
bahm-sae-goh shee-puh-yoh
bamsaego sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
밤샐 수 있어요
bahm-sael soo ee-ssuh-yoh
bamsael su isseoyo
Because / So (아/어서)
밤새서
bahm-sae-suh
bamsaeseo
Noun form — (기)
밤새기
bahm-sae-gee
bamsaegi
Noun form — (음)
밤샘
bahm-saem
bamsaem