proponent Meaning, Definition & Usage

  1. noun a person who pleads for a cause or propounds an idea
    advocator; advocate; exponent.

WordNet

Pro*po"nent adjective
Etymology
L. proponens, p. pr.
Definitions
  1. Making proposals; proposing.
Pro*po"nent noun
Definitions
  1. One who makes a proposal, or lays down a proposition. Dryden.
  2. (Law) The propounder of a thing.

Webster 1913