careless
/ˈkɛrləs/
adjective
- Not giving enough attention or thought to what you are doing, resulting in mistakes or damage.
- Leaving the door unlocked was a careless mistake.
- She made a careless error on the test because she didn't read the instructions.
- A careless driver caused the accident by running a red light.
- Done or made without care or effort; showing a lack of concern.
- His careless handwriting was almost impossible to read.
- The report was full of careless typos and missing data.
- She gave a careless shrug and walked away.