proponent

noun

pro·​po·​nent prə-ˈpō-nənt 

ˈprō-ˌpō-

: 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.

Synonyms of proponent

• advocate
• supporter
• advocator
• exponent

Examples of proponent in a Sentence

a vocal proponent of the use of electric-powered cars

Recent Examples on the Web

While video podcasting gains traction, proponents argue narrative audio serves a distinct, hands-free need, fostering unparalleled listener connection. — Frank Racioppi, Forbes.com, 20 July 2026

To proponents of the new measure, the acquisition would represent a sweetheart deal. — Shomik Mukherjee, Mercury News, 19 July 2026

Some proponents suggest that prediction markets could be an alternative to insurance, especially as insurers pull out of regions at high-risk for wildfire. — Laura Paddison, CNN Money, 17 July 2026

Among Miami’s billionaires, Griffin has become one of the city’s most vocal proponents. — Andres Viglucci, Miami Herald, 17 July 2026

Word History

Etymology

Latin proponent-, proponens, present participle of proponere

First Known Use

1588, in the meaning defined above

Rhymes for proponent

• component
• deponent
• exponent
• opponent
• multicomponent
• ponent

Kids Definition

proponent

noun

pro·​po·​nent prə-ˈpō-nənt 

ˈprō-ˌpō-nənt

: one who argues in favor of something

a proponent of recycling

Legal Definition

proponent

noun

pro·​po·​nent prə-ˈpō-nənt 

1

: one who argues in favor of something

2

: one who offers a will for probate