nonfeasance non‧fea‧sance [nɒnˈfiːzns ǁ nɑːn-] noun [uncountable]
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nonfeasance UK US /ˌnɒnˈfiːzəns/ noun [U] LAW
► a failure to do something when there is a legal duty to do so, especially by a person in authority: »
The two marshals committed nonfeasance by refusing to answer questions from the investigator.
Financial and business terms. 2012.