felonious adjective2 •Of, relating to, being, or having the quality of felony.The defendant must show that any bail money he hopes to post did not come from the felonious means. •Done with intent to commit a crime.First, as felony prosecutor, I prosecute high-level felonies including homicides; sexual assaults; child endangerings; shootings and other felonious assaults; and media cases. — 2015 formsmore felonious · most felonious