Paroxysmal
Paroxysm means sudden attack.
The term "incursion" refers to a sudden or brief attack or invasion into a territory. It often implies a quick and unexpected entry, typically involving conflict or aggression. Another relevant term is "onslaught," which denotes a fierce or violent attack. Both terms convey the idea of an aggressive, often sudden, confrontation.
The term invasion means "attack, especially a sudden or brief one." This could be political unrest, war, terrorist and demonstration malicious or peaceful
The term invasion means "attack, especially a sudden or brief one." This could be political unrest, war, terrorist and demonstration malicious or peaceful
Acute
The term assault has the following definition: a sudden violent attack, or an unlawful physical attack on another or an attempt to do violence to another person.
Paroxysmal means relating to a sudden attack or worsening.
Angiospasm is sudden contraction of a blood vessel. In contrast, vasoconstriction is the normal process of contraction of a blood vessel.VasoconstrictionAngiospasm
The medical term for pertaining to a sudden occurrence is "acute." This term is commonly used to describe conditions or diseases that have a rapid onset and a short duration.
malignant hypertension
"Blitzkrieg," which translates to "lightning war."
A word for sudden heavy rain is "downpour." This term describes a brief but intense rainfall, often characterized by its volume and speed. Other synonyms might include "cloudburst" or "deluge," both of which convey similar meanings of sudden, heavy precipitation.