1. in a way that uses more of something than is necessary or appropriate

Examples

• She spent money wastefully on things she didn’t need.
• The company was using energy wastefully by leaving lights on all night.
• He wastefully threw away food that could have been saved.
• The government was criticized for wastefully spending taxpayer money.
• They were wastefully using water during the drought.
• The factory wastefully discarded materials that could be recycled.