1. without paying attention to what one is doing; in a way that shows lack of care or concern

Examples

• She carelessly left her keys on the kitchen counter.
• He carelessly threw his clothes on the floor.
• The student carelessly made several spelling errors on the test.
• Don’t handle the fragile vase so carelessly.
• She carelessly forgot to lock the front door.
• The driver carelessly ran through the red light.
• He carelessly spilled coffee on his shirt before the interview.