kind treatment of somebody when they are being punished; a lack of desire to punish somebody so severely (Oxford)
kindness when giving a punishment (Cambridge)
He was executed by firing squad despite widespread pleas for clemency. (Oxford)
His lawyers appealed for clemency on the grounds of ill health. (Oxford)
The jury passed a verdict of guilty, with an appeal to the judge for clemency. (Cambridge)
pleas for clemency
appealed for clemency
Mercy
Kindness
Meanness
Cruelty
Clemency