The phrase "avid champion of" is correct and usable in written English.
It can be used to express strong support or advocacy for a particular cause, idea, or individual.
Example: "She is an avid champion of environmental conservation, dedicating her time to various initiatives."
Alternatives: "passionate supporter of" or "enthusiastic advocate for".
An avid champion of Indian art, he donated much of his collection to the Harvard University Art Museums.
Throughout her life she was an avid champion of the right for human dignity amongst all people.
American journalist who, served as the editor of The Wall Street Journal's editorial page for three of his nearly four decades with that paper and in that post was an avid champion of supply-side economics and increased defense spending.
Szigeti was an avid champion of new music, and frequently planned his recitals to include new or little-known works alongside the classics.
It's hard to imagine that Miranda, who has spent his whole career as an avid champion of Broadway inclusion, would be thrilled about his show's awesome imbalance of wealth and popularity.
This year, in addition to bringing me a hand-embroidered purse and a series of gorgeous bangles from India, my incredible friend Mallika Punwani offered one of the most compelling quotes about the importance of love from Persian religious leader Abdu'l-Baha, an avid champion of social justice and an ambassador for international peace.
Semans was an avid champion for the arts, women's rights and social justice in Durham and beyond.
He has been an avid champion for customers and has made a focus on fans central to the StubHub DNA.
As a former chair of the Holocaust Center, Owen was an avid supporter of Holocaust education and a dedicated champion of human rights.
Persson is an avid supporter of the Far Lands journey.
I'm an avid supporter of the weekly local markets.
