1. in a way that is very serious, harsh, or strict
2. to a very great degree; extremely

Examples

• The judge severely punished the criminal.
• She was severely injured in the accident.
• The teacher spoke severely to the disruptive students.
• The drought severely affected crop production.
• His reputation was severely damaged by the scandal.
• The building was severely damaged by the earthquake.
• The company was severely criticized for its poor safety record.