Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
unexpected collapse
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "unexpected collapse" is correct and usable in written English.
It can be used to describe a sudden and unforeseen failure or breakdown of a system, structure, or organization. Example: "The unexpected collapse of the bridge during rush hour caused significant traffic delays and raised safety concerns."
✓ Grammatically correct
News & Media
Science
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
15 human-written examples
The totally unexpected collapse of all computers on Jan . 1(later known as Y2K1) took everyone by surprise.
News & Media
The swift and unexpected collapse of the towers has safety officials and engineers re-examining evacuation plans and stairway design.
News & Media
It is unlikely the owners will pin an unexpected collapse on Coughlin and Reese, the most prominent architects of the team's two recent Super Bowl victories.
News & Media
Also focusing bankers' minds was the unexpected collapse of CajaSur, a bank in Andalusia controlled by the Catholic Church that had refused to merge with a larger rival.
News & Media
Despite jubilation in Beirut at the unexpected collapse on Monday of the Syrian-backed government led by Omar Harami, there was no sign that Damascus would be allowed any breathing space until it releases its grip on Lebanon.
News & Media
In fact, the third and, potentially, fourth days are most crucially about England and their ability to shake off the effects of the unexpected collapse of a middle order which, with the exception of Paul Collingwood, in the first two Tests was looking like one of the last words in impregnability.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
44 human-written examples
Striving to place the audience inside Lily's experience of a randomly interrupted life (the film boasts "significant input" from the Epilepsy Society), director Bryn Higgins makes us feel the cuts and bruises that Lily acquires during unexpected collapses, and share her sense of exasperation at the ambulance rides that merely get in the way of her primary purpose.
News & Media
But he said that even if an unexpected tunnel collapse did cut off water without warning, the city could make do until repairs could be completed, primarily by shifting supply to its two other aqueduct systems, the Catskill and the Croton.
News & Media
Investigations were conducted after the accident to determine the cause of the unexpected progressive collapse.
Science
Finally, it was understood that two unexpected catastrophic collapses were experienced as a consequence of ice ponds that occurred on the edge regions of the roof due to discontinuously heated roof parts by the radiant heaters mounted on the roof structure and the freezing of the siphonic system.
Science
A number of Pakistan players were banned indefinitely after their team's unexpected second-innings collapse cost the team the second Test in Australia during January 2010.
News & Media
Expert writing Tips
Best practice
Use "unexpected collapse" when analyzing systemic failures where the suddenness of the event is a key factor, such as in economic or structural analyses.
Common error
Avoid using "unexpected collapse" in situations where a failure is reasonably foreseeable. The phrase loses its impact if the context already implies a high likelihood of failure. Highlight the surprise element only when it truly exists.
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "unexpected collapse" functions primarily as a noun phrase, often serving as the subject or object of a sentence. It describes a situation where something suddenly and surprisingly fails or breaks down. Ludwig AI provides examples showing how the phrase is used in various contexts, confirming its grammatical role.
Frequent in
News & Media
62%
Science
38%
Formal & Business
0%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "unexpected collapse" is a common and grammatically correct expression used to describe a sudden and unforeseen failure or breakdown. As noted by Ludwig AI, it effectively conveys surprise and a lack of anticipation. Predominantly found in News & Media and Science contexts, its neutral register allows for versatile application. To maximize impact, ensure the failure was genuinely unforeseen, avoiding overuse in predictable situations. Semantically related alternatives include "sudden breakdown" and "abrupt failure", offering nuanced ways to express the same concept. In summary, "unexpected collapse" serves as a powerful descriptor for events marked by their sudden and surprising nature.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
sudden breakdown
Replaces "collapse" with "breakdown", emphasizing the sudden cessation of function.
abrupt failure
Uses "failure" instead of "collapse", highlighting the unsuccessful outcome with an emphasis on the lack of warning.
sudden disintegration
Emphasizes both the speed and the falling apart nature of the event.
unforeseen disintegration
Substitutes "collapse" with "disintegration", suggesting a process of falling apart that was not predicted.
abrupt disintegration
Highlights the suddenness of disintegration.
surprise implosion
Emphasizes the inward collapsing nature of the event, highlighting the unexpected nature of the event.
unpredicted downfall
Replaces "collapse" with "downfall", focusing on the negative consequence of the event being unexpected.
surprise failure
Uses "failure" to represent the inability to function, stressing its unexpected nature.
unforeseen fall
Uses the term "fall" for simplicity emphasizing unpredictability.
sudden subsidence
Highlights a collapse that involves sinking or caving in rapidly.
FAQs
How can I use "unexpected collapse" in a sentence?
You can use "unexpected collapse" to describe a sudden and unforeseen failure or breakdown of something. For example, "The "unexpected collapse" of the bridge caused significant traffic delays".
What are some alternatives to "unexpected collapse"?
Some alternatives include "sudden breakdown", "abrupt failure", or "unforeseen disintegration", depending on the specific context.
Is "unexpected collapse" redundant?
While "collapse" often implies suddenness, adding "unexpected" emphasizes the lack of anticipation, reinforcing the element of surprise. It's not always redundant, and can add clarity depending on context.
What kind of scenarios benefit from using the phrase "unexpected collapse"?
Scenarios where the failure or breakdown was truly unforeseen and had significant, often dramatic consequences benefit most. This includes structural failures, sudden economic downturns, or unforeseen system malfunctions.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested