derelict

adjective

1. left or deserted, as by the owner or guardian; abandoned: a derelict ship.
2. neglectful of duty; delinquent; negligent.

noun

3. a person abandoned by society, especially a person without a permanent home and means of support; vagrant; bum.
4. Nautical. a vessel abandoned in open water by its crew without any hope or intention of returning.
5. personal property abandoned or thrown away by the owner.
6. one guilty of neglect of duty.
7. Law. land left dry by a change of the water line.

adjective

1. deserted or abandoned, as by an owner, occupant, etc
2. falling into ruins; neglected; dilapidated
3. neglectful of duty or obligation; remiss

noun

4. a person abandoned or neglected by society; a social outcast or vagrant
5. property deserted or abandoned by an owner, occupant, etc
6. a vessel abandoned at sea
7. a person who is neglectful of duty or obligation

adj.

1640s, from Latin derelictus “solitary, deserted,” past participle of dereliquere “to abandon, forsake, desert,” from de- “entirely” + relinquere “leave behind” (see relinquish). Originally especially of vessels abandoned at sea or stranded on shore. As a noun, from 1660s.