Eunoia

In rhetoric, eunoia () is the goodwill a speaker cultivates between themselves and their audience, a condition of receptivity. In Book VIII of the "Nicomachean Ethics", Aristotle uses the term to refer to the kind and benevolent feelings of goodwill a spouse has which form the basis for the ethical foundation of human life. Cicero translates with the Latin word .
It is also a rarely used medical term referring to a state of normal mental health. "Eunoia" is the shortest English word containing all five main vowel graphemes.