bombshell
n.a piece of news that is very surprising or shocking. It is usually something unexpected that changes a situation completely.
n.a sudden and highly impactful piece of news or a surprising revelation. Often used to describe information that disrupts a current state of affairs or public perception.
“The manager dropped a bombshell by quitting during the meeting.”
“The journalist's report was a political bombshell that led to several high-level resignations within the week.”
“The CEO's sudden announcement of a merger acted as a corporate bombshell, sending the company's stock price into a volatile swing as investors scrambled to assess the implications.”
Commonly used with the verb 'to drop' ('to drop a bombshell').
“His loss was a political bombshell, and while he fought the result, his appeal was dismissed — and his hopes to lead the Ontario Liberals went with it.”
“On Tuesday, Fedorov released on YouTube a bombshell nine-minute video .”
From bomb + shell.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.