What does diaphoretic mean?
Diaphoretic describes anything that induces or promotes sweating, whether a medicine, an herb, or a bodily process. It functions both as an adjective, as in "a diaphoretic remedy," and as a noun referring to the agent itself, as in "the physician administered a diaphoretic." The word belongs chiefly to medical, pharmacological, and herbal registers: clinicians may describe a feverish patient as diaphoretic when he is visibly sweating, while herbalists classify plants such as elderflower, ginger, and yarrow as diaphoretics traditionally given to help break a fever. The underlying idea is that sweating carries heat and, in older medical theory, disease-causing humors out of the body through the skin. Derived from Greek roots meaning essentially "to carry through," the term entered English in the seventeenth century alongside its sibling noun diaphoresis, meaning the act of sweating. Though uncommon outside specialist contexts, it remains precise and current wherever sweating is discussed clinically.
Inducing or promoting sweating; also, relating to or marked by perspiration.
"The herbalist recommended a mildly diaphoretic infusion of elderflower and peppermint."
In clinical writing, calling a patient "diaphoretic" simply means he or she is visibly sweating.
A drug, herb, or other agent that induces sweating.
"Physicians once kept several diaphoretics on hand for treating febrile illnesses."
Used only for the noun sense referring to sweat-inducing agents.
"Traditional apothecaries stocked a range of diaphoretics derived from roots, barks, and flowers."
"Diaphoretic" comes straight from the Greek for "to carry through" — because a good sweat is your body carrying heat and illness out through the skin.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of diaphoretic
Diaphoretic derives from the Greek verb diaphorein, "to perspire," formed from dia- ("through") and phorein ("to carry"), so the word's root image is of something being carried through the skin. It passed into English via New Latin diaphoreticus in the early seventeenth century, at the height of learned medical borrowing from Latin and Greek. The same Greek root phorein gives English cognates such as semaphore ("signal-carrier") and metaphor ("a carrying across").
Related word forms
How diaphoretic is actually used
Primarily a technical term used in medicine, pharmacology, and clinical description; rare in everyday conversation, where "sweat-inducing" or plain descriptions of sweating are preferred. As a noun it is countable ("a diaphoretic"). In clinical notes, "diaphoretic" describing a patient means visibly sweating.
Easily confused with diaphoretic
A diuretic promotes the production of urine by the kidneys, whereas a diaphoretic promotes sweating through the skin.
An antidiuretic reduces urine output — nearly the opposite of what a diaphoretic does for sweat, despite the similar spelling.