a·merce 
(ə-mûrs)
(ə-mûrs)tr.v. a·merced, a·merc·ing, a·merc·es
Law
Law
To punish by fine or other penalty.
[Middle English amercen, from Anglo-Norman amercier, from à merci, at the mercy of : à, to (from Latin ad; see AD-) + merci, mercy (from Latin mercēs, wages).]
a·mercea·ble adj.
a·mercement n.