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

During the final weeks of the campaign, the initiative’s proponents will have to rely on person-to-person organizing. — Nicholas Lemann, New Yorker, 4 Oct. 2026

But the two bills Newsom vetoed on Wednesday, AB 1881 and AB 2218, sought to redress those historic wrongs by requiring the state to take Indigenous history with land and waterways into account, proponents of them said. — Andrew Graham, Sacbee.com, 1 Oct. 2026

To backfill some of the loss in research funding, proponents say Proposition 38 will create a stable source of funding for scientists and medical experts. — Karen Garcia, Los Angeles Times, 1 Oct. 2026

The president has reworked Russia’s economy and political system around the conflict, channeling investment into weapons factories and making loud proponents of the war central figures in the country’s government. — Dmytro Kuleba, Foreign Affairs, 30 Sep. 2026