A clear-minded, unshakable calm sustained by the absence of inner turmoil and anxiety.
A clear-minded, unshakable calm sustained by the absence of inner turmoil and anxiety — a central aim of several Hellenistic philosophies (Pyrrhonist Skepticism, Epicureanism, Stoicism).
Freedom from disturbance (a negative state), distinct from serenity, tranquility, or peace as merely pleasant feelings, and from generic equanimity in being a technical telos with specific methods. It differs by school: in Pyrrhonism it follows suspension of judgment (epoché); in Epicureanism it is a static mental pleasure paired with bodily painlessness (aponia); in Stoicism it is not the goal but a byproduct of apatheia and a virtuous life.
a- “not, without” + tarass- “to disturb, trouble” = “unperturbedness.”
From the alpha-privative a- (“not”) + tarass- (“to disturb, agitate”) + the abstract suffix -ia — “the state of not being disturbed.”
Associated with Pyrrho (suspension of judgment), Epicurus (freedom from mental distress as core to the highest good), and the Stoics (tranquillity following from apatheia). In ordinary ancient usage it described a soldier's composed state entering battle. Remains a philosophy term of art, popularized in modern Stoicism/well-being writing.
Popular usage conflates ataraxia with general “calm” or “inner peace,” obscuring that the schools disagreed on whether it is the ultimate goal (Pyrrhonism, Epicureanism) or merely a consequence of virtue (Stoicism).