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

Credit goes to the bridge’s proponents for amplifying these problems and calling on the state to address them. — Pete Harrison, Hartford Courant, 6 July 2026

But working against Measure A’s proponents is the propensity of homeowners to turn out for an election at higher rates than renters. — Lori Weisberg, San Diego Union-Tribune, 3 July 2026

Stream-access proponents took a similar approach in 2010, after a landowner on the Taylor River strung cables from bank to bank to keep a rafting company from floating down. — Dac Collins, Outdoor Life, 1 July 2026

In terms of the new loan limits, meanwhile, proponents of the One Big Beautiful Bill argue that the caps will pressure colleges to lower costs and discourage students from borrowing beyond their means. — Connor Greene, Time, 1 July 2026