Synonyms of 'dereliction'
the state of being abandonedThe previous owners had rescued the building from dereliction.
He pleaded guilty to wilful dereliction of duty.
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in the sense of desertion
It was a long time since she'd referred to her desertion of her colleagues in their time of need.
in the sense of failure
the fact of something required or expected not being done or not happeningThey didn't prove his case of a failure of duty.
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Thesaurus for dereliction from the Collins English Thesaurus