■ noun ( plural mercies )
1》 compassion or forgiveness shown towards an enemy or person in one's power.
2》 something to be grateful for.
3》 [as modifier ] (especially of a journey or mission) motivated by compassion.
■ exclamation archaic used to express surprise or fear.
Phrases
at the ~ of completely in the power of.
Origin
ME: from OFr. merci 'pity' or 'thanks', from L. merces , merced- 'reward', in Christian L. 'pity, favour, heavenly reward'.