Assisting a criminal is a serious offense and can result in criminal charges. It is important to know different ways of referring to this illegal act. Synonyms for assist a criminal include aiding and abetting, harboring, facilitating, enabling, sheltering, conspiring, conniving, partnering, collaborating, and supporting. Each term highlights the role of an individual in helping someone to commit a crime. It is important to remember that being aware of a crime and failing to report it can also result in criminal charges, so it is important to understand the legal consequences of any actions or inaction related to criminal activity.