تَضَاغُنٌ

The conceiving, or being affected with, mutual rancour, malevolence, malice, or spite. (KL, and Har p. 43.) You say, تضاغنوا and ↓ اضطغنوا They had, or held, in the heart, feelings of mutual rancour, malevolence, malice, or spite. (S, K.)