nonprosecution adjective 1noun 1forms 1 adjective1 •Of or pertaining to a decision not to prosecuteIt has been the Justice Department’s preference in the Bush administration to resolve criminal investigations of large corporations with so-called nonprosecution or deferred prosecution agreements. — 2008 noun1 •A failure to prosecute.The second reason offered for blanket nonprosecutions for crimes committed at the megabanks involves the possibility that such prosecutions could harm the economy. — 2017 formsnonprosecutions