bad feeling
1. An unpleasant feeling of foreboding. I refuse to get on that plane today—I just have a bad feeling about it.
2. A feeling or feelings of anger, displeasure, or unhappiness. There will probably always be a bad feeling between us—I mean, she did steal a lot of money from our company!
bad/ill ˈfeeling(s)
anger between people, especially after an argument or a disagreement: There was a lot of bad feeling between the two groups of students.