Derelict

1. Abandoned, forsaken; given up by the natural owner or guardian; (of a ship) abandoned at sea, dilapidated, neglected; (of a spacecraft) abandoned in outer space.
2. There was a derelict ship on the island.
3. Negligent in performing a duty.
4. Lost; adrift; hence, wanting; careless; neglectful; unfaithful.

(abandoned): abandoned