A sudden event is an occurrence that happens unexpectedly and often without warning, leading to immediate consequences. Examples include natural disasters like earthquakes or floods, accidents, or sudden health emergencies. These events can disrupt normal activities and require quick responses from individuals or communities. Their unpredictable nature often heightens their impact and urgency.
An afterclap is a sudden unexpected event or repercussion, or something which occurs after an event is supposed to have ended.
Matthew's sudden disappearance was caused by an unknown event or circumstance that affected him.
sudden and unexpected or brief to the point of rudeness or steep; precipitous
I think it's extinction. ------------------------------- More specifically an "extinction event".
catastrophe
catastrophe =katastrofeMeaning an event causing great and sudden suffering.
an ice age
Sudden impact.
The phrase "sudden-sudden" is not standard English and may be used informally or in specific dialects to emphasize the abruptness of an event. In standard English, simply using "sudden" would suffice to convey the idea of something happening unexpectedly or without warning. If emphasis is needed, one might use phrases like "suddenly" or "all of a sudden."
Some event that is usually sudden and unexpected that requires immediate action to rectify.
an event causing great and often sudden damage or suffering; a disaster
Pre- means before. Ictus means a sudden event such as a stroke, seizure, collapse, or faint So, Pre-Ictus is the period before such an event.