I saw him at Supporters Club meetings back then expounding his views on players.
From the expressandstar.com
The Yankees weren't much interested in expounding on the first one a while back.
From the newsday.com
The boozers at the Goolma pub were expounding on how good they were at tennis.
From the smh.com.au
To the Brahmin belongs the right of teaching and expounding the sacred texts.
From the en.wikipedia.org
He acquired mastery over the books expounding the six systems of Indian philosophy.
From the en.wikipedia.org
When it comes to expounding on himself, he's more secretive than the Kremlin.
From the usatoday.com
It was one of his final acts expounding a stance on philosophical questions.
From the en.wikipedia.org
During his Consulship an odd scene took place, noticeably expounding of Roman manners.
From the en.wikipedia.org
If not, you are merely expounding the standard, but certainly not correct, relativism.
From the en.wikipedia.org
More examples
Elaborate: add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing; "She elaborated on the main ideas in her dissertation"
Set forth: state; "set forth one's reasons"
(expounding) exposition: a systematic interpretation or explanation (usually written) of a specific topic
To lay open; to expose to view; to examine; To lay open the meaning of; to explain or discuss at length; to clear of obscurity; to interpret