echer

Example:The proponent of the plan presented a compelling argument at the town hall meeting.

Definition:A person who supports or defends a particular cause, policy, or belief.

Example:He was an advocate for recycling and often spoke about the importance of waste reduction.

Definition:A person who speaks or writes in support of a particular cause or proposal.

Example:The promoter secured funding for the local theater festival by reaching out to corporate sponsors.

Definition:A person who helps to publicize or sell something; esp. a person whose job or business is to promote a company, product, or other cause.