Learn the meaning of virtue as a good moral quality, an advantage or a result in English. Find out how to use virtue in sentences and phrases with other words. Virtue definition : moral excellence; goodness; righteousness.. See examples of VIRTUE used in a sentence. virtue /ˈvɜːtjuː; -tʃuː/ n the quality or practice of moral excellence or righteousness a particular moral excellence: the virtue of tolerance any of the cardinal virtues (prudence, justice, fortitude, and temperance) or theological virtues (faith, hope, and charity) any admirable quality, feature, or trait chastity, esp in women archaic an effective, active, or inherent power or force by virtue of, in virtue of ⇒ on account of or by reason of make a virtue of necessity ⇒ to ... Aristotelian virtue In his Nicomachean Ethics, Aristotle defined a virtue as a point between a deficiency and an excess of a trait. [10] The point of greatest virtue lies not in the exact middle, but at a golden mean sometimes closer to one extreme than the other. This golden mean obtains at a desirable middle between excess and deficiency.