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

One of the leading proponents of an energy-centric view of disease is Martin Picard, a biologist who directs the Mitochondrial Psychobiology Group at Columbia University. — Rowan Jacobsen, Scientific American, 20 Oct. 2026

The No campaign accused measure proponents of misusing the state office. — Andrew Graham, Sacbee.com, 20 Oct. 2026

In West Virginia, Arkansas and Texas, proponents have been eager to challenge anyone who got in the way, including fellow Republicans who voiced concerns. — Henry Culvyhouse, ProPublica, 19 Oct. 2026

The rift between these tribes was on full display last month as the main opponent of the constitutional question claimed election malfeasance by proponents of A-83. — Andrew McKean, Outdoor Life, 15 Oct. 2026