mercyとは何ですか?Compassionate treatment, especially of those under one's power; clemency.A disposition to be kind and forgiving: a heart full of mercy. Something for which to be thankful; a blessing: It was a mercy that no one was hurt. Alleviation of distress; relief: Taking in the refugees was an act of mercy. at the mercy of Without any protection against; helpless before: drifting in an open boat, at the mercy of the elements.