A crime wave can be described in various ways, depending on its nature and severity. Some synonyms for crime wave include a crime spree, a surge in crime, a spike in criminal activity, an outbreak of crime, a rampage of criminal behavior, and a wave of criminal incidents. Other phrases that can be used to describe a crime wave are a surge in lawlessness, an upswing in delinquency, a wave of criminality, and a rash of criminal incidents or activities. Whatever phrase is used, it typically denotes a sudden and significant increase in criminal activity that is cause for concern for law enforcement and citizens alike.