In rhetoric, antonomasia is a kind of metonymy in which an epithet or phrase takes the place of a proper name, such as "the little corporal" for Napoleon I, or conversely the use of a proper name as an archetypal name, to express a generic idea. A frequent instance of antonomasia in the Late Middle Ages and early Renaissance was the use of the term "the Philosopher" to refer to Aristotle.

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Stylistically, such epithets may be used for elegant variation to reduce repetition of names in phrases. The word comes from the Greek ἀντονομασία, antonomasia, itself from the verb ἀντονομάζειν, antonomazein 'to name differently'.^[1][2][3]

The opposite of antonomasia is an archetypal name. One common example in French is the word for fox: the Latin-derived French: goupil was replaced by French: renard, from Renart, the fox hero of the Roman de Renart (originally the German Reinhard).

• Allusion
• Eponym
• Sobriquet
• Synecdoche
• Trademark erosion
• Honorific nicknames in popular music