to repel = طَرَد
طَرَد (tarada) means to repel, drive away, e.g. طَرَدَ الذّبَابَ عَنِ الشَّرَاب he repelled the flies from the drink. It is used when the repelling is being done physically, such as with the hand or with some instrument. The fourth form of this verb is أَطْرَد (atrada), which means to expel, banish. It is used when a ruler issues a command that someone be removed from a place, e.g. أَطْرَدَ السُّلْطَانُ زَيْدًا عَنِ الْبَلَد the sultan banished Zayd from the country.