sudden, urgent: 급ᄒᆞ다

suddenly, promptly, quickly: 갑자기, 갑제기, 갑재기, 급자기, 깝자기, 깝재기, 감째기, 깜째기, ᄁᆞᆷ재기, 벨안간

at once, right away, on the spot: 담박, 당장에, 당장

at once, on the spot, right away: 단작, 대박, 데빡

immediately: 직시, 즉시, 버루기〜버룩이, 버륵이

at a breath, at a stretch, at a stroke, at once, by one effort, immediately, on the spot, right away: 단작에, 대박에, 데빡에

at once, immediately: 담박에

soon: 착ᄒᆞ게, 어ᄀᆞ라, 어가라, 어그라, 워ᄀᆞ라, 어거라, 어그레, 얼른, 거쓴, 거씬, 커쓴, 커씬, 걸른, 얼풋, 곧

at a breath, at a stretch: 데번에, 대번에, 댓번에, 데번, 대번, 댓번

the same day, the very day: 당일

at once: ᄒᆞᆫ꺼번에

with a single stroke: 단칼에

all together, along with, at once, together, with: ᄒᆞᆷ치, ᄒᆞᆷ끼〜ᄒᆞᆷ끠

at a stroke, by one effort: 단번에

all of sudden, out of nowhere, to one's surprise, suddenly: 난디엇이

accidental, sudden, unexpected: 난데없다, 난듸읏다

out of nowhere, to one's surprise: 돌연히

suddenly: 문뜩, 무뜩

quickly: 확