An "outspoken champion" is someone who openly and confidently supports or defends a cause, idea, or group. They speak up and take a stand for what they believe in. Full definition
This is the guy many might have assumed was so thorough a torch - bearer for self - publishing and so outspoken a champion of entrepreneurial authors that he'd throw scones at the huge traditional British house that wanted to handle his new work. (janefriedman.com)
This award is named for the late F.X. Matt, president of the F.X. Matt Brewing Co. in Utica, N.Y., from 1980 - 1989, and a tireless and outspoken champion for the small brewing industry. (brewersassociation.org)
Mike Novogratz, the Wall Street trader who became one of bitcoin's most outspoken champions, is starting a merchant bank dedicated to cryptocurrencies and blockchain - based ventures. (getrevue.co)