A substance or agent that weakens or debilitates, causing loss of strength or vigor; in medicine, something that causes weakness.
From debilitate (to weaken) with the present participle suffix -ant, creating a noun for 'something that debilitates.' From Latin debilitare (to weaken).
This word appears in medical and toxicology texts to describe anything from diseases to poisons that sap your strength—it's the opposite of a 'stimulant,' making it a mirror word in pharmacology!
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