What is "expatiating"

Usage examples of "expatiating".

Then she rattled on interminably, expatiating on the respectability of her calling, and praising the value of the goods she offered.

Bab and Betty thought the day would never end, and cheered the long hours by expatiating on the pleasures in store for them, till their playmates were much afflicted because they were not going also.

Manual of Rhetoric, expatiating on the dogmas of style, nor a Grammar full of arbitrary rules and exceptions.

He was listening, with a good-humored, negligent air, half comic, half contemptuous, to Haley, who was very volubly expatiating on the quality of the article for which they were bargaining.