1.) The action of being a person that simply cannot be happy for another person's success. So rather than be happy they make a point of exposing a flaw in that person.
2.) The behavior of a hater
Person 1~ Did you hear about Marisol’s new promotion? She’s doing really well at the new company.
Person 2~ It’s see the one that drives an old Honda Civic and always wears washed out clothes?
Person 1~ Why can’t you just be happy for her. Stop the HATER BEHAVIOR.