The phrase "abrupt shutdown" refers to a sudden and unexpected stopping or closing of something, without any prior notice or preparation. Full definition
Somebody needs to say here that hysteria about abrupt shutdown of the «gulf stream» (sigh) is counterproductive with respect to critical thinking about the real ongoing effects of climate change like Tropical Glacier Retreat which few people seem interested in. (realclimate.org)
Not all of Mr. Bharara's public corruption inquiries led to criminal charges, most notably his sweeping examination of Mr. Cuomo's abrupt shutdown in March 2014 of an anticorruption commission that the governor had formed with great fanfare just nine months earlier. (nytimes.com)
The governor's abrupt shutdown of Moreland goaded U.S. Attorney Preet Bharara to pursue the commission's leads. (nymag.com)