proponent

noun

Synonyms of proponent
: one who argues in favor of something : advocate

Did you know?

Proponent comes from the same Latin word as propose, so a proponent is someone who proposes something, or at least supports it by speaking and writing in favor of it. Thus, for example, proponents of casinos argue that they create jobs, whereas proponents of a casino ban—that is, casino opponents—argue that they're corrupting and they take money away from people who can't afford it. As a rule, just about anything important that gets proposed also gets opposed.

Examples of proponent in a Sentence

a vocal proponent of the use of electric-powered cars
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.
But proponents argued thousands of people already take potentially dangerous black market peptides, and that the agency should protect them by granting access to safer product. The Week Us, TheWeek, 3 Aug. 2026 Lieber, a long-time proponent of increasing Fair Fares access, also lauded the council’s decision. Josephine Stratman, New York Daily News, 3 Aug. 2026 But Zuckerberg might know something the measure’s proponents do not — or won’t admit. Jared Walczak, San Diego Union-Tribune, 31 July 2026 The bill’s legislative proponents argue the measure is a win for taxpayers, citing reductions in the cost of homeownership while maintaining funding for schools and other essential services. Abigail Hall, The Conversation, 30 July 2026 See All Example Sentences for proponent

Word History

Etymology

Latin proponent-, proponens, present participle of proponere

First Known Use

1588, in the meaning defined above

Time Traveler
The first known use of proponent was in 1588

Browse Nearby Words

Cite this Entry

“Proponent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/proponent. Accessed 5 Aug. 2026.

Kids Definition

proponent

noun
pro·​po·​nent prə-ˈpō-nənt How to pronounce proponent (audio)
ˈprō-ˌpō-nənt
: one who argues in favor of something
a proponent of recycling

Legal Definition

proponent

noun
1
: one who argues in favor of something
2
: one who offers a will for probate

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