mercy

noun
Relenting; forbearance to cause or allow harm to another.Forgiveness or compassion, especially toward those less fortunate.A tendency toward forgiveness, pity, or compassion.Instances of forbearance or forgiveness.A blessing; something to be thankful for.

verb
To feel mercyTo show mercy; to pardon or treat leniently because of mercy

interjection
Expressing surprise or alarm.