د ر اd-r-ʾ
(ف) دَرَاَ يَدْرَاُ دَرْاًdaraʾa yadraʾu daran: to push away, to remove, to repel. ﴿وَيَدْرَءُوْنَ بِالْحَسَنَةِ السَّيِّئَةَ﴾ (Ar-Raʿd 13:22); ﴿وَيَدْرَؤُا عَنْهَا الْعَذَابَ﴾ (An-Nūr 24:8)
Form VI (tafāʿul) تَدَارَاَ يَتَدَارَاُ تَدَارُؤًاtadāraʾa yatadāraʾu tadāruʾan: to cast the blame on one another. From this comes تَدَارَاْتُمْtadārātum, which by the rule of assimilation (idghām) has become اِدّٰرَاْتُمْiddārātum. ﴿فَادّٰرَءْتُمْ فِيْهَا﴾ (Al-Baqarah 2:72)