"Derelict" is a fancy way of saying something is broken, old, and not taken care of anymore. It is commonly used to describe buildings or areas that are empty and nobody is using or maintaining them. It can also describe a person who is not doing their job or responsibilities. So if your room is a mess because you are not cleaning it, it might become 'derelict'.
Which of these examples is the odd one out?
He was reprimanded for leaving his duties derelict during the critical mission
She pointed out the derelict boat floating aimlessly on the river
The house was derelict, its gardens wellmaintained and lively
The once opulent mansion now stood as a derelict, forgotten by time
The old factory was completely derelict after years of neglect
