a person who advocates a theory, proposal, or project.
synonyms:
advocate · supporter · upholder ·
exponent · promoter · adherent · endorser · champion · defender ·
backer · subscriber · patron · espouser · friend ·
apostle · apologist
Donald J. Trump is a proponent of a wall along the southern
U.S.A. / Mexico border.
Our president is a supporter/endorser/
defender/champion/
backer of a wall along the southern U.S.A. / Mexico border..
