|Origin:||merci, from Latin merces 'price paid, payment for work', from merx 'things for sale'|
if someone shows mercy, they choose to forgive or to be kind to someone who they have the power to hurt or punish:
He showed no mercy to his enemies.
God have mercy on his soul.
beg/cry/plead for mercy
The boy was screaming and begging for mercy.
unable to do anything to protect yourself from someone or something:
After the boat's motor failed, they were at the mercy of the weather.
She was completely at his mercy.
a journey taken to bring help to people:
a mercy mission to help homeless refugees
to let someone be dealt with by another person, who may treat them very badly or strictly - used humorously
to ask someone to help you or forgive you when you are in a very bad situation
used to say that it is lucky that a worse situation was avoided:
It's a mercy the accident happened so near the hospital.