Dictionary

dereliction

noun der·e·lic·tion \ˌder-ə-ˈlik-shən, ˌde-rə-\

: the act of no longer caring for, using, or doing something : the act of abandoning something

: the condition of being no longer cared for

law : failure to do your job or duty : failure to do what you should do

Full Definition of DERELICTION

1
a :  an intentional abandonment
b :  the state of being abandoned
2
:  a recession of water leaving permanently dry land
3
a :  intentional or conscious neglect :  delinquency <dereliction of duty>
b :  fault, shortcoming
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First Known Use of DERELICTION

1597

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