1. in a way that involves cruel or violent treatment of someone
2. in a way that uses rude and offensive language
3. in a way that uses something wrongly or improperly

Examples

• The coach spoke abusively to the players during practice.
• He was fired for treating his employees abusively.
• She responded abusively when criticized about her work.
• The customer complained abusively to the manager.
• The dictator ruled abusively over his people.
• He abusively used his position of power for personal gain.
• The software was being used abusively to violate privacy rights.