This is the 13452nd most frequent Korean word.
뜬금없이
"뜬금없이" means "out of the blue" or "suddenly and unexpectedly."
Here, '뜬금없이' is used to describe an action occurring without prior notice or context.
그는 뜬금없이 제안서를 제출했어요.
He suddenly submitted the proposal.
In this sentence, '뜬금없이' conveys that the rain started unexpectedly or without any evident weather signs.
뜬금없이 비가 오기 시작했어요.
Suddenly, it started to rain.
This usage of '뜬금없이' indicates that the laughter happened abruptly and without any apparent reason.