Proponent comes from the same Latin word as propose, so a proponent is someone who proposes something, or at least supports it by speaking and writing in favor of it.

PROPONENT definition: 1. a person who speaks publicly in support of a particular idea or plan of action: 2. a person who…. Learn more.

This made them strong proponents of individual liberty and strong opponents of government intervention in society, other than to protect the individual and his property rights.

PROPONENT definition: a person who puts forward a proposition or proposal. See examples of proponent used in a sentence.

Proponent means someone who is in favor of something. You might be a proponent of longer vacations, but your parents are proponents of a longer school year.

proponent (of something) a person who supports an idea or course of action. Definition of proponent noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, …

1. a person who puts forward a proposition or proposal. 2. an advocate for or adherent of a cause or doctrine. 3. a person who propounds a legal instrument, as a will for probate. [1580–90; < …