1
: being the person or thing for whom or which something specified is named : of, relating to, or being an eponym
the eponymous owner of the bookstore
The epic poem's eponymous hero, then an aging warrior, stepped in.—Sonja Anderson
2
: named for a particular person or thing
the band's eponymous album [=the album titled with the band's name]
an eponymous brand/label
[Simone] Biles performed a vault that was worth eight-tenths of a point less than her eponymous double-flipping skill.—Thuc Nhi Nguyen

Did you know?

What’s in a name? If the name is eponymous, a name is in the name: an eponymous brand, café, river, or ice cream is named for someone or something. And because English is beastly sometimes, the one lending the name to the brand, café, river, or ice cream can also be described as eponymous. This means that if Noah Webster owns a bookstore called “Webster’s Books,” it’s an eponymous bookstore, and Noah himself is the bookstore’s eponymous owner. Most of the time, though, we see eponymous describing a thing named for a person—for example, an eponymous brand named for a designer, or a band’s eponymous album titled only with the band’s name. The related word eponym is less ambiguous: it refers to the one for whom someone or something is named. At our hypothetical “Webster’s Books,” Noah Webster is the bookstore’s eponym. Appropriately enough, the Greek root of both words is onyma, meaning “name.”

Examples of eponymous in a Sentence

… Ramayana, an Indian epic which chronicles, in sixty thousand verses, the adventures of its eponymous hero Rama … —Leila Hadley, Give Me the World, (1958) 1999
"Cool Britannia," which goes back to Ben and Jerry's eponymous ice cream in Spring 1996, met its sell-by-date within weeks … —Harold Perkin, Times Literary Supplement, 18 Dec. 1998
Karen Hubert Allison, the eponymous (if you count middle names) creator of Hubert's, didn't know she was making dining history … —Peter Kaminsky, New York Times Book Review, 11 May 1997
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The series follows the exploits of Luffy and his pirate crew in their search for the eponymous One Piece. — Theara Coleman, TheWeek, 22 Sep. 2026 Tyler Ellis, a designer who was born and raised in Los Angeles and produces her eponymous collection of handbags and evening bags out of Florence, Italy, took the first-place finish ahead with an MIV of $428,000. — Laurie Brookins, HollywoodReporter, 21 Sep. 2026 The restaurant's eponymous pizzaiolo made his name from gleefully redefining what the iconic dish can be. — Kat Chen, Condé Nast Traveler, 21 Sep. 2026 The final season revealed who the eponymous mother is, while the finale explained her ultimate fate. — Sara Netzley, Entertainment Weekly, 19 Sep. 2026 See All Example Sentences for eponymous

Word History

Etymology

Greek epṓnymos "bearing a name derived from an existing name" + -ous — more at eponym

First Known Use

1846, in the meaning defined at sense 1

Time Traveler
The first known use of eponymous was in 1846

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Cite this Entry

“Eponymous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eponymous. Accessed 26 Sep. 2026.

Medical Definition

eponymous

adjective
: of, relating to, or named after an eponym
those eponymous genetic conditions … such as … Friedreich's ataxia—R. O. Brady
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