accidental, sudden, unexpected: 난데없다, 난듸읏다

suddenly: 문뜩, 무뜩

out of nowhere, to one's surprise: 돌연히

unexpectedly: 들그레기

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

suddenly, abruptly: 연제엇이, 뜽금읏이, 뜬금어시, 뜽금에읏이

sudden, urgent: 급ᄒᆞ다

unexpected: 의웨, 이웨

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

with a single stroke: 단칼에

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

certainly, without fail: 기여이

hurry: 서둘르다, 서둘다, 서들다, 서들브다

without fail, certainly: 반드시, 똑, 꼭, 똑기

barely: 제우, 겨우, 제위

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

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

immediately: 버루기〜버룩이, 버륵이, 직시, 즉시

at once, immediately: 담박에

at ease, refreshed, cool, fresh, refreshing: 시원ᄒᆞ다, 시원허다, 시언허다, 씨원ᄒᆞ다, 씨원하다

the same day, the very day: 당일

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

without permission, without reason, recklessly, thoughtlessly: ᄒᆞᆷ부로, ᄒᆞᆷ불로