dereliction
n
1 [U] being derelict 遗弃; 弃置
a house in a state of dereliction 弃置的房屋.
2 (idm 习语) ,dereliction of `duty (fml 文) (deliberate) failure to do what one ought to do 失职
be guilty of a serious dereliction of duty 犯严重失职罪.
The reader's hair stands on end when he reads in the final pages of the novel that the heroine a dear old lady who had always been so kind to everybody, had, in her youth, poisoned every one of her five husbands.