dereliction
🇺🇸
/ˌderəˈlɪkʃn/
🇬🇧
/ˌderəˈlɪkʃn/
When a place is abandoned and not taken care of, making it look bad.
The old factory was an example of dereliction, with broken windows and crumbling walls.
When someone doesn't do what they are supposed to do, especially if it's their job.
The dereliction of the security guard led to the theft at the museum.