derelict

Concise Oxford English Dictionary © 2008 Oxford University Press:
derelict/ˈderəlɪkt/

▶adjective

• 1 in a very poor condition as a result of disuse and neglect.

• 2 chiefly N. Amer. shamefully negligent.

▶noun

• 1 a destitute person.

• 2 a ship or other piece of property abandoned by its owner.

– origin C17: from L. derelict-, derelinquere ‘abandon’, from de- ‘completely’ + relinquere ‘forsake’.