nonfeasance [ non fee zuhns ]
Definition (Random House Unabridged Dictionary):
1. the omission of some act that ought to have been performed.
Definition (The American Heritage Dictionary of the English Language):
1. Failure to perform an act that is either an official duty or a legal requirement.
[ 1590–1600; non- + obs. feasance (Fr. faisance 'activity'); compare malfeasance, misfeasance ]
3. Nonfeasance and gross neglect of duty for failing to perform the official duties of his office and for being incompetent to execute his office’s duties.
--The Toledo Blade, Disgraced Dann resigns as Ohio Attorney General