0 without a motive:
an apparently motiveless murder
The purposeful regulation of behaviour becomes impossible, leading to erratic responses and motiveless wandering.
In short, what we might term motiveless bullying is not covered at all.
The police and many other organisations are putting in a great deal of work to counter motiveless and mindless behaviour.
Indeed, the crime was completely motiveless.
Crime is motiveless, mindless and amoral.
His was the perfect crime, undetected, unexplained, motiveless, unavenged.
They should also examine the defendants background for any history of impulsive and motiveless violence.