mercy noun
ADJ. divine, infinite God's infinite mercy
VERB + MERCY ask for, beg for, plead for, scream for | have, show (sb) God have mercy on us! They showed no mercy to their captives.
MERCY + NOUN dash, flight, mission Aid agencies are making mercy flights into the flood region. | killing
PREP. at the ~ of We're at the mercy of the weather. | without ~ The terrorists are completely without mercy.
You can also check other dicts: mercy (English, 中文解释 ), wordnet sense, Collins Definition