proponent

[pruh-poh-nuh nt] /prəˈpoʊ nənt/
noun
1.
a person who puts forward a proposition or proposal.
2.
a person who argues in favor of something; an advocate.
3.
a personwho supports a cause or doctrine; adherent.
4.
a person who propounds a legal instrument, such as a will for probate.
Origin
1580-90; < Latin prōpōnent- (stem of prōpōnēns). See propone, -ent
Can be confused
antagonist, proponent, protagonist.
Synonyms
2, 3. supporter, champion, enthusiast.
Examples from the web for proponent
  • McCarthy was a strong proponent of nuclear power, even offering to eat a gram of plutonium to show how safe it was.
  • Once the clout of an advocate is weakened, the stage is set for dismissal of the proponent's position.
  • And the governor has been a proponent of adult stem-cell research, for economic reasons as well as ethical ones.
  • He became a big proponent of reverse psychology, baiting opponents into underestimating your strength.
  • During the debt-ceiling showdown, he was a major proponent of risking a default if he didn't get the spending cuts he wanted.
  • No wonder, every proponent of mainstream science is trying to censor my posts, whenever possible.
  • Scientific theories are often full of smoke-and-mirrors and are refuted when a charismatic or well-funded proponent dies.
  • She's a former small-business owner and a consistent proponent of free trade.
  • The proponent should also identify the preferred alternative and should state the reasons for accepting or rejecting alternatives.
  • The proponent is charged for salary costs plus a fixed sum to be determined by the proponent and the consultant.
British Dictionary definitions for proponent

proponent

/prəˈpəʊnənt/
noun
1.
a person who argues in favour of something
2.
(law) a person who seeks probate of a will
Word Origin
C16: from Latin prōpōnere to propose
Word Origin and History for proponent
n.

1580s, "one who brings forth a proposition or argument," from Latin proponentem (nominative proponens), present participle of proponere "put forward" (see propound). In part also a native formation from propone. As an adjective from 1680s.