dereliction

noun

Etymology: From Latin dērelictiō (“neglect, abandonment”), from dērelinquō (“to neglect, abandon”), from dē- + re- + linquō (“to leave”).

1. Willful neglect of one's duty.

   “The new soldier did not clean his cabin and was scolded for dereliction and disobedience.”

   “What he did was a terrible dereliction of duty.”

2. The act of abandoning something, or the state of being abandoned.

   “To this we must contend with prayer , with actual dereliction and seposition of all our other affairs”

   “There is much sad evidence, too, of the spoliation and dereliction of vanished industry: tips, slag-heaps and derelict colliery-screens among which the ubiquitous, nomad mountain sheep graze unconcernedly.”

3. Land gained from the water by a change of water-line.