Synonyms of proponent

proponent

noun

prə-ˈpō-nənt 

as in advocate

a person who actively supports or favors a cause

a vocal proponent of the use of electric-powered cars

Synonyms & Similar Words

• advocate
• supporter
• advocator
• exponent
• promoter
• friend
• champion
• apostle
• booster
• protagonist
• white knight
• paladin
• expounder
• high priest
• true believer
• tub-thumper
• espouser
• backer
• adherent
• stalwart
• hierophant
• herald
• loyalist
• disciple
• gospeler
• interpreter
• follower
• cheerleader
• encourager
• cohort
• partisan
• fellow traveler
• applauder

Antonyms & Near Antonyms

• opponent
• adversary
• antagonist
• enemy
• foe
• critic
• rival
• faultfinder
• belittler

Example Sentences

Recent Examples of proponent

Andrew Sweetman, the Scottish marine biogeochemist who led the work, hadn’t made such claims, but he was still pilloried by fellow-scientists, and proponents of mining accused him of being an anti-mining crusader. — James Dinneen, New Yorker, 13 Aug. 2026

Of course, proponents of greater borrowing acknowledged that there could be a future shock that once again demanded large government borrowing. — Kenneth S. Rogoff, Foreign Affairs, 12 Aug. 2026

Prediction market platforms and their proponents say trading contracts on the markets is not the same as betting, likening it instead to trading on the stock market. — Justine McDaniel, Los Angeles Times, 12 Aug. 2026

Anthony Beale, 9th, who has been a leading proponent of VGTs in Chicago. — Robert Channick, Chicago Tribune, 12 Aug. 2026