extremely careless

Examples (10)

• He was extremely careless with the company's financial data.
• It was extremely careless of him to leave the confidential report on his desk.
• The accident was caused by an extremely careless driver.
• She is often extremely careless about locking the doors.
• You can't afford to be extremely careless when handling fragile items.
• His extremely careless mistake cost the team the championship.
• I've never seen someone so extremely careless with their personal belongings.
• If I had been that extremely careless, I would have been fired immediately.
• To lose the keys twice in one week is extremely careless.
• He had grown extremely careless in his old age, often forgetting his medication.