what is a per se
Per se may refer to: 1  per se (Latin) , a Latin phrase meaning in itself. 2  Illegal per se, the legal usage in criminal and anti-trust law. 3  Negligence per se, legal use in tort law.er se may refer to: 1  per se (Latin) , a Latin phrase meaning in itself. 2  Illegal per se, the legal usage in criminal and anti-trust law. 3  Negligence per se, legal use in tort law.