Doubtless my words surprised Henry; he at first believed them to be the wanderings of my disturbed imagination, but the pertinacity with which I continually recurred to the same subject persuaded him that my disorder indeed owed its origin to some uncommon and terrible event.
There are no more uses of "pertinacious" in the book.
Show samples from other sources
as pertinacious as a bulldog’s mouth
the most vocal and pertinacious of all the critics