gerund : harboring a grudge long long after the fact; whining about being a victim rather than living a productive life.
You lost the game fair and square, so stop palestining and move on with your day.
verb, intransitive : 1. to focus on past wrongs rather than moving forward. 2. to harbor unrealistic expectations. 3. to accuse others of cheating when you lose a game or competition. 4. to assume that you never have to grow up and take care of yourself.
You should adopt a positive mindset and work on your resume rather than palestine about losing your job.