noun
a medicine that causes the evacuation of the bowels
adjective
having the effect of cleansing or purifying
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The doctor prescribed a purgative to help cleanse the patient's digestive system.
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I need to take a purgative to get rid of this stomach ache.
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I heard that new juice cleanse is a great purgative for detoxing.
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Facing the truth was a purgative experience that helped her let go of the past.