Someone who blames others for their own actions is often referred to as a "blamer," "fault-finder," "finger-pointer," or "scapegoater." Another term that is frequently used for this behavior is "deflection," where the person tries to deflect responsibility away from themselves and onto others. Additionally, in psychology, this behavior can be associated with "external locus of control," meaning the individual perceives outside factors as responsible for their actions rather than taking personal responsibility.