Dereliction

Part of speech: noun (n.)

1. The act of leaving with an intention not to reclaim or resume; an utter forsaking abandonment. Cession or dereliction, actual or tacit, of other powers. Burke.

2. A neglect or omission as if by willful abandonment. A total dereliction of military duties. Sir W. Scott.

3. The state of being left or abandoned.

4. A retiring of the sea, occasioning a change of high-water mark, whereby land is gained.