What does dualist mean?
A dualist is a person who accepts some form of dualism — the view that two fundamentally different kinds of things exist. Most famously, this means believing that mind and body are distinct: that conscious thought is not simply a product of physical brain activity. René Descartes is the classic example, arguing for a thinking, immaterial soul set apart from extended, mechanical matter. But the term extends beyond philosophy of mind; theologians may be dualists about God and creation, and ethicists sometimes divide the world into good and evil as independent forces. In casual use, calling someone a dualist can also imply a habit of sharp either-or thinking. The word is largely academic in register, appearing most often in philosophy seminars, textbooks, and serious journalism rather than everyday conversation. Its opposite number is the monist, who insists there is ultimately only one kind of stuff. Careful writers distinguish it from 'duelist,' which concerns armed combat rather than metaphysics.
A believer in or advocate of dualism, especially the doctrine that mind and matter are two distinct and irreducible substances or principles.
"The seventeenth-century French philosopher was a thoroughgoing dualist who located thought in an immaterial soul."
Most often encountered in discussions of Descartes, philosophy of mind, and comparative religion.
More broadly, a person given to dividing a subject into two sharply opposed categories.
"He was a moral dualist, seeing every conflict as a battle between pure good and pure evil."
Sometimes used critically to imply simplistic black-and-white reasoning.
Regular English plural; used when referring collectively to adherents of dualist doctrines across different thinkers or traditions.
"Cartesian dualists faced the difficult question of how an immaterial mind could interact with a material body."
Swap one letter and you go from someone who argues minds aren't brains to someone who settles arguments with pistols — 'dualist' versus 'duelist' has tripped up readers for centuries.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of dualist
The word 'dualist' derives from Latin 'dualis', meaning 'containing two' or 'of two', itself rooted in 'duo', meaning 'two'. It entered English via the noun 'dualism', coined in the late eighteenth century within European philosophy to label doctrines positing two ultimate principles, with 'dualist' arising shortly after to name their adherents. It shares its Latin root with related terms such as 'dual', 'duality', and 'dualistic'.
Related word forms
How dualist is actually used
Primarily used in academic and intellectual contexts — philosophy of mind, theology, and metaphysics. The plural 'dualists' refers collectively to adherents. It carries no inherent positive or negative connotation, though critics sometimes use it dismissively to suggest oversimplified either/or thinking.
Easily confused with dualist
A duelist fights in formal combat with weapons, whereas a dualist holds a philosophical belief about two fundamental principles.