adverb modifies a verb, adjective, or other adverb, indicating the manner in which something is done
Severely ill patients require immediate attention and intensive care.
The defendant was severely punished for their crimes.
The student was severely reprimanded for cheating on the exam.
The company was severely impacted by the recession.
The ecosystem was severely damaged by the oil spill.
In a medical drama script, the doctor may describe a patient's condition as severely ill.
A psychologist may use the term severely to describe a patient's level of depression or anxiety.
An engineer may use the term severely to describe a structural flaw in a building or bridge.
A lawyer may use the term severely to describe the impact of a crime on a victim.
A teacher may use the term severely to describe a student's behavior or academic performance.