Meaning of the word dereliction in English

What does dereliction mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

dereliction

US /ˌder.əˈlɪk.ʃən/
UK /ˌder.əˈlɪk.ʃən/

Noun

1.

(a) failure to do what you should do:

Example:
What you did was a grave dereliction of duty.
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