This is a dereliction of duty, pure and simple—a firing offense.
Around this time, he was reprimanded, unfairly, on two counts of dereliction of duty.
By rejecting this last attempt to suborn a dereliction of duty, Henry saved my reputation, my honor, my life, really.
It had suffered a sizeable brain drain, since over a third of its workforce was fired by Chavez for dereliction of duty.
And Cheney wants all knowledge of his dereliction of duty tossed down the memory hole.
I cannot spare him—I must not; it would be a gross dereliction of my duty to spare the life of such an atrocious ruffian.
He had no reason and only a very poor excuse to offer for his dereliction.
Burns was nearly heart-broken by this dereliction, and between grief and rage was driven to the verge of insanity.
He bitterly reproached his valet for this dereliction of duty.
Now, the dereliction of poor Edward Langdale was that his lips did not altogether confine themselves to the cheek of Lucette.
1590s, "abandonment" (formerly with a wider range than in modern use, e.g. of the sea withdrawing from the land), from Latin derelictionem (nominative derelictio), noun of action from past participle stem of derelinquere (see derelict). Meaning "failure in duty" is from c.1830.